Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / Page.cs / 1305376 / Page.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
// Uncomment out this line to display rare field statistics at the end of the page
//#define DISPLAYRAREFIELDSTATISTICS
/*
* Page class definition
*
* Copyright (c) 1998 Microsoft Corporation
*/
namespace System.Web.UI {
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.ComponentModel.Design.Serialization;
using System.Configuration;
using System.EnterpriseServices;
using System.Globalization;
using System.IO;
using System.Reflection;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters;
using System.Security;
using System.Security.Permissions;
using System.Security.Principal;
using System.Text;
using System.Threading;
using System.Web;
using System.Web.Caching;
using System.Web.Compilation;
using System.Web.Configuration;
using System.Web.Handlers;
using System.Web.Hosting;
using System.Web.Management;
using System.Web.RegularExpressions;
using System.Web.Security;
using System.Web.SessionState;
using System.Web.UI.Adapters;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.Util;
using System.Xml;
using System.Web.Routing;
///
/// Default ControlBuilder used to parse page files.
///
public class FileLevelPageControlBuilder: RootBuilder {
private ArrayList _contentBuilderEntries;
private ControlBuilder _firstControlBuilder;
private int _firstLiteralLineNumber;
private bool _containsContentPage;
private string _firstLiteralText;
internal ICollection ContentBuilderEntries {
get {
return _contentBuilderEntries;
}
}
public override void AppendLiteralString(string text) {
if (_firstLiteralText == null) {
if (!Util.IsWhiteSpaceString(text)) {
int iFirstNonWhiteSpace = Util.FirstNonWhiteSpaceIndex(text);
if (iFirstNonWhiteSpace < 0) iFirstNonWhiteSpace = 0;
_firstLiteralLineNumber = Parser._lineNumber - Util.LineCount(text, iFirstNonWhiteSpace, text.Length);
_firstLiteralText = text;
if (_containsContentPage) {
throw new HttpException(SR.GetString(
SR.Only_Content_supported_on_content_page));
}
}
}
base.AppendLiteralString(text);
}
public override void AppendSubBuilder(ControlBuilder subBuilder) {
// Tell the sub builder that it's about to be appended to its parent
if (subBuilder is ContentBuilderInternal) {
ContentBuilderInternal contentBuilder = (ContentBuilderInternal)subBuilder;
_containsContentPage = true;
if (_contentBuilderEntries == null) {
_contentBuilderEntries = new ArrayList();
}
if (_firstLiteralText != null) {
throw new HttpParseException(SR.GetString(SR.Only_Content_supported_on_content_page),
null, Parser.CurrentVirtualPath, _firstLiteralText, _firstLiteralLineNumber);
}
if (_firstControlBuilder != null) {
Parser._lineNumber = _firstControlBuilder.Line;
throw new HttpException(SR.GetString(SR.Only_Content_supported_on_content_page));
}
TemplatePropertyEntry entry = new TemplatePropertyEntry();
entry.Filter = contentBuilder.ContentPlaceHolderFilter;
entry.Name = contentBuilder.ContentPlaceHolder;
entry.Builder = contentBuilder;
_contentBuilderEntries.Add(entry);
}
else {
if (_firstControlBuilder == null) {
if (_containsContentPage) {
throw new HttpException(SR.GetString(SR.Only_Content_supported_on_content_page));
}
_firstControlBuilder = subBuilder;
}
}
base.AppendSubBuilder(subBuilder);
}
internal override void InitObject(object obj) {
base.InitObject(obj);
if (_contentBuilderEntries == null)
return;
ICollection entries = GetFilteredPropertyEntrySet(_contentBuilderEntries);
foreach(TemplatePropertyEntry entry in entries) {
ContentBuilderInternal contentBuilder = (ContentBuilderInternal)entry.Builder;
try {
contentBuilder.SetServiceProvider(ServiceProvider);
// Note that 'obj' can be either a Page or a MasterPage,
// hence the need for this virtual method.
AddContentTemplate(obj, contentBuilder.ContentPlaceHolder, contentBuilder.BuildObject() as ITemplate);
}
finally {
contentBuilder.SetServiceProvider(null);
}
}
}
internal virtual void AddContentTemplate(object obj, string templateName, ITemplate template) {
Page page = (Page)obj;
page.AddContentTemplate(templateName, template);
}
internal override void SortEntries() {
base.SortEntries();
FilteredPropertyEntryComparer comparer = null;
ProcessAndSortPropertyEntries(_contentBuilderEntries, ref comparer);
}
}
///
///
/// Defines the properties, methods, and events common to
/// all pages that are processed on the server by the Web Forms page framework.
///
/// This class is not marked as abstract, because the VS designer
/// needs to instantiate it when opening .ascx files
///
[
DefaultEvent("Load"),
Designer("Microsoft.VisualStudio.Web.WebForms.WebFormDesigner, " + AssemblyRef.MicrosoftVisualStudioWeb, typeof(IRootDesigner)),
DesignerCategory("ASPXCodeBehind"),
DesignerSerializer("Microsoft.VisualStudio.Web.WebForms.WebFormCodeDomSerializer, " + AssemblyRef.MicrosoftVisualStudioWeb, "System.ComponentModel.Design.Serialization.TypeCodeDomSerializer, " + AssemblyRef.SystemDesign),
ToolboxItem(false)
]
public class Page: TemplateControl, IHttpHandler {
private const string HiddenClassName = "aspNetHidden";
private const string PageID = "__Page";
private const string PageScrollPositionScriptKey = "PageScrollPositionScript";
private const string PageSubmitScriptKey = "PageSubmitScript";
private const string PageReEnableControlsScriptKey = "PageReEnableControlsScript";
// NOTE: Make sure this stays in [....] with MobilePage.PageRegisteredControlsThatRequirePostBackKey
//
private const string PageRegisteredControlsThatRequirePostBackKey = "__ControlsRequirePostBackKey__";
private const string EnabledControlArray = "__enabledControlArray";
//used by TemplateControl to hookup auto-events
internal static readonly object EventPreRenderComplete = new Object();
internal static readonly object EventPreLoad = new object();
internal static readonly object EventLoadComplete = new object();
internal static readonly object EventPreInit = new object();
internal static readonly object EventInitComplete = new object();
internal static readonly object EventSaveStateComplete = new object();
private static readonly Version FocusMinimumEcmaVersion = new Version("1.4");
private static readonly Version FocusMinimumJScriptVersion = new Version("3.0");
private static readonly Version JavascriptMinimumVersion = new Version("1.0");
private static readonly Version MSDomScrollMinimumVersion = new Version("4.0");
// Review: this is consistent with MMIT legacy -do we prefer two underscores?
private static readonly string UniqueFilePathSuffixID = "__ufps";
private string _uniqueFilePathSuffix;
internal static readonly int DefaultMaxPageStateFieldLength = -1;
internal static readonly int DefaultAsyncTimeoutSeconds = 45;
private int _maxPageStateFieldLength = DefaultMaxPageStateFieldLength;
private string _requestViewState;
private bool _cachedRequestViewState;
private PageAdapter _pageAdapter;
// Has the page layout changed since last request
private bool _fPageLayoutChanged;
private bool _haveIdSeparator;
private char _idSeparator;
// Session state
private bool _sessionRetrieved;
private HttpSessionState _session;
private int _transactionMode; /* 0 = TransactionOption.Disabled*/
private bool _aspCompatMode;
private bool _asyncMode;
// Async related
private TimeSpan _asyncTimeout;
private bool _asyncTimeoutSet;
private PageAsyncTaskManager _asyncTaskManager;
private PageAsyncInfo _asyncInfo;
// Page culture and uiculture set dynamically
private CultureInfo _dynamicCulture;
private CultureInfo _dynamicUICulture;
// ViewState
private string _clientState;
private PageStatePersister _persister;
internal ControlSet _registeredControlsRequiringControlState;
private StringSet _controlStateLoadedControlIds;
internal HybridDictionary _registeredControlsRequiringClearChildControlState;
internal const ViewStateEncryptionMode EncryptionModeDefault = ViewStateEncryptionMode.Auto;
private ViewStateEncryptionMode _encryptionMode = EncryptionModeDefault;
private bool _viewStateEncryptionRequested;
private ArrayList _enabledControls;
// Http Intrinsics
internal HttpRequest _request;
internal HttpResponse _response;
internal HttpApplicationState _application;
internal Cache _cache;
internal string _errorPage;
private string _clientTarget;
// Form related fields
private HtmlForm _form;
private bool _inOnFormRender;
private bool _fOnFormRenderCalled;
private bool _fRequireWebFormsScript;
private bool _fWebFormsScriptRendered;
private bool _fRequirePostBackScript;
private bool _fPostBackScriptRendered;
private bool _containsCrossPagePost;
private RenderMethod _postFormRenderDelegate;
private bool _requireFocusScript;
private bool _profileTreeBuilt;
internal const bool MaintainScrollPositionOnPostBackDefault = false;
private bool _maintainScrollPosition = MaintainScrollPositionOnPostBackDefault;
private ClientScriptManager _clientScriptManager;
// Needed to support Validators in AJAX 1.0 (Windows OS Bugs 2015831)
private static Type _scriptManagerType;
internal const bool EnableViewStateMacDefault = true;
internal const bool EnableEventValidationDefault = true;
internal const string systemPostFieldPrefix = "__";
///
/// Initializes a new instance of the
///
public Page() {
_page = this; // Set the page to ourselves
_enableViewStateMac = EnableViewStateMacDefault;
// Ensure that the page has an ID, for things like trace
ID = PageID;
_supportsStyleSheets = -1;
}
///
/// Gets the
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public HttpApplicationState Application {
get {
return _application;
}
}
///
/// Gets the HttpContext for the Page.
///
protected internal override HttpContext Context {
[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
get {
if (_context == null) {
_context = HttpContext.Current;
}
return _context;
}
}
// Set of unique control ids which have already loaded control state
private StringSet ControlStateLoadedControlIds {
get {
if (_controlStateLoadedControlIds == null) {
_controlStateLoadedControlIds = new StringSet();
}
return _controlStateLoadedControlIds;
}
}
///
/// The value to be written to the __VIEWSTATE hidden fields. Getter is exposed through a protected property in
/// PageAdapter.
///
internal string ClientState {
get {
return _clientState;
}
set {
_clientState = value;
}
}
/*
* Any onsubmit statment to hook up by the form. The HtmlForm object calls this
* during RenderAttributes.
*/
internal string ClientOnSubmitEvent {
get {
if (ClientScript.HasSubmitStatements ||
(Form != null && Form.SubmitDisabledControls && (EnabledControls.Count > 0))) {
// to avoid being affected by earlier instructions we must
// write out the language as well
return "javascript:return WebForm_OnSubmit();";
}
return string.Empty;
}
}
public ClientScriptManager ClientScript {
get {
if (_clientScriptManager == null) {
_clientScriptManager = new ClientScriptManager(this);
}
return _clientScriptManager;
}
}
///
/// Indicates whether the requesting browser is uplevel or downlevel so that the appropriate behavior can be
/// generated for the request.
///
[
DefaultValue(""),
WebSysDescription(SR.Page_ClientTarget),
Browsable(false),
EditorBrowsable(EditorBrowsableState.Advanced),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public string ClientTarget {
get {
return (_clientTarget == null) ? String.Empty : _clientTarget;
}
set {
_clientTarget = value;
if (_request != null) {
_request.ClientTarget = value;
}
}
}
private string _clientQueryString = null;
public String ClientQueryString {
get {
if (_clientQueryString == null) {
if (RequestInternal != null && Request.HasQueryString) {
// Eliminate system post fields (generated by the framework) from the
// querystring used for adaptive rendering.
Hashtable ht = new Hashtable();
foreach (string systemPostField in s_systemPostFields) {
ht.Add(systemPostField, true);
}
//
_clientQueryString = ((HttpValueCollection)Request.QueryString).ToString(true /* encode */, ht);
}
else {
_clientQueryString = String.Empty;
}
}
return _clientQueryString;
}
}
internal bool ContainsEncryptedViewState {
get {
return _containsEncryptedViewState;
}
set {
_containsEncryptedViewState = value;
}
}
///
///
/// Gets or sets the error page to which the requesting browser should be
/// redirected in the event of an unhandled page exception.
///
///
[
DefaultValue(""),
WebSysDescription(SR.Page_ErrorPage),
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public string ErrorPage {
get {
return _errorPage;
}
set {
_errorPage = value;
}
}
///
/// Gets a value indicating whether the page is being loaded in response to a client callback.
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public bool IsCallback {
get {
return _isCallback;
}
}
/// Page class can be cached/reused
[
Browsable(false),
EditorBrowsable(EditorBrowsableState.Never)
]
public bool IsReusable {
get { return false; }
}
///
/// Required for small browsers that cache too aggressively.
///
protected internal virtual String UniqueFilePathSuffix {
get {
if (_uniqueFilePathSuffix != null) {
return _uniqueFilePathSuffix;
}
// Only need a few digits, so save space by modulo'ing by a prime.
// The chosen prime is the highest of six digits.
long ticks = DateTime.Now.Ticks % 999983;
_uniqueFilePathSuffix = String.Concat(UniqueFilePathSuffixID + "=", ticks.ToString("D6", CultureInfo.InvariantCulture));
_uniqueFilePathSuffix = _uniqueFilePathSuffix.PadLeft(6, '0');
return _uniqueFilePathSuffix;
}
}
// This property should be public. (DevDiv Bugs 161340)
public Control AutoPostBackControl {
get {
return _autoPostBackControl;
}
set {
_autoPostBackControl = value;
}
}
internal bool ClientSupportsFocus {
get {
return (_request != null) &&
((_request.Browser.EcmaScriptVersion >= FocusMinimumEcmaVersion) || (_request.Browser.JScriptVersion >= FocusMinimumJScriptVersion));
}
}
internal bool ClientSupportsJavaScript {
get {
if (!_clientSupportsJavaScriptChecked) {
_clientSupportsJavaScript = (_request != null) &&
(_request.Browser.EcmaScriptVersion >= JavascriptMinimumVersion);
_clientSupportsJavaScriptChecked = true;
}
return _clientSupportsJavaScript;
}
}
private ArrayList EnabledControls {
get {
if (_enabledControls == null) {
_enabledControls = new ArrayList();
}
return _enabledControls;
}
}
internal string FocusedControlID {
get {
if (_focusedControlID == null) {
return String.Empty;
}
return _focusedControlID;
}
}
///
/// The control that has been set to be focused (empty if there was no such control)
///
internal Control FocusedControl {
get {
return _focusedControl;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public HtmlHead Header {
get {
return _header;
}
}
///
/// VSWhidbey 80467: Need to adapt Id separator.
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
EditorBrowsable(EditorBrowsableState.Never)
]
public new virtual char IdSeparator {
get {
if (!_haveIdSeparator) {
if (AdapterInternal != null) {
_idSeparator = PageAdapter.IdSeparator;
}
else {
_idSeparator = IdSeparatorFromConfig;
}
_haveIdSeparator = true;
}
return _idSeparator;
}
}
///
/// The control that has was last focused (empty if there was no such control)
///
// We
internal string LastFocusedControl {
[AspNetHostingPermission(SecurityAction.Assert, Level = AspNetHostingPermissionLevel.Low)]
get {
if (RequestInternal != null) {
// SECURITY: Change this to just check form + query string
string lastFocus = Request[lastFocusID];
if (lastFocus != null) {
return lastFocus;
}
}
return String.Empty;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public bool MaintainScrollPositionOnPostBack {
get {
if (RequestInternal != null && RequestInternal.Browser != null && !RequestInternal.Browser.SupportsMaintainScrollPositionOnPostback)
return false;
return _maintainScrollPosition;
}
set {
if (_maintainScrollPosition != value) {
_maintainScrollPosition = value;
if (_maintainScrollPosition) LoadScrollPosition();
}
}
}
///
/// The MasterPage used by the Page.
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
WebSysDescription(SR.MasterPage_MasterPage)
]
public MasterPage Master {
get {
if (_master == null && !_preInitWorkComplete) {
_master = MasterPage.CreateMaster(this, Context, _masterPageFile, _contentTemplateCollection);
}
return _master;
}
}
///
/// Gets and sets the masterPageFile of this Page.
///
[
DefaultValue(""),
WebCategory("Behavior"),
WebSysDescription(SR.MasterPage_MasterPageFile)
]
public virtual string MasterPageFile {
get {
return VirtualPath.GetVirtualPathString(_masterPageFile);
}
set {
if (_preInitWorkComplete) {
throw new InvalidOperationException(SR.GetString(SR.PropertySetBeforePageEvent, "MasterPageFile", "Page_PreInit"));
}
if (value != VirtualPath.GetVirtualPathString(_masterPageFile)) {
_masterPageFile = VirtualPath.CreateAllowNull(value);
if (_master != null && Controls.Contains(_master)) {
Controls.Remove(_master);
}
_master = null;
}
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
EditorBrowsable(EditorBrowsableState.Never)
]
public int MaxPageStateFieldLength {
get {
return _maxPageStateFieldLength;
}
set {
if (this.ControlState > ControlState.FrameworkInitialized) {
throw new InvalidOperationException(SR.GetString(SR.PropertySetAfterFrameworkInitialize, "MaxPageStateFieldLength"));
}
if (value == 0 || value < -1) {
throw new ArgumentException(SR.GetString(SR.Page_Illegal_MaxPageStateFieldLength), "MaxPageStateFieldLength");
}
_maxPageStateFieldLength = value;
}
}
///
/// Indicates whether page requires cross post script
///
internal bool ContainsCrossPagePost {
get {
return _containsCrossPagePost;
}
set {
_containsCrossPagePost = value;
}
}
///
/// True if the form should render a reference to the focus script.
///
internal bool RenderFocusScript {
get {
return _requireFocusScript;
}
}
internal Stack PartialCachingControlStack {
get {
return _partialCachingControlStack;
}
}
///
/// Returns the page state persister associated with the page.
///
protected virtual PageStatePersister PageStatePersister {
get {
if (_persister == null) {
PageAdapter adapter = PageAdapter;
if (adapter != null) {
_persister = adapter.GetStatePersister();
}
if (_persister == null) {
_persister = new HiddenFieldPageStatePersister(this);
}
}
return _persister;
}
}
// Reconstructs the view state string from the view state fields in the request
internal string RequestViewStateString {
get {
if (!_cachedRequestViewState) {
StringBuilder state = new StringBuilder();
try {
NameValueCollection requestValueCollection = RequestValueCollection;
if (requestValueCollection != null) {
// If ViewStateChunking is disabled(-1) or there is no ViewStateFieldCount, return the __VIEWSTATE field
string fieldCountStr = RequestValueCollection[ViewStateFieldCountID];
if (MaxPageStateFieldLength == -1 || fieldCountStr == null) {
_cachedRequestViewState = true;
_requestViewState = RequestValueCollection[ViewStateFieldPrefixID];
return _requestViewState;
}
// Build up the entire persisted state from all the viewstate fields
int numViewStateFields = Convert.ToInt32(fieldCountStr, CultureInfo.InvariantCulture);
if (numViewStateFields < 0) {
throw new HttpException(SR.GetString(SR.ViewState_InvalidViewState));
}
// The view state is split into __VIEWSTATE, __VIEWSTATE1, __VIEWSTATE2, ... fields
for (int i=0; i 0) key += i.ToString(CultureInfo.InvariantCulture);
string viewStateChunk = RequestValueCollection[key];
if (viewStateChunk == null) {
throw new HttpException(SR.GetString(SR.ViewState_MissingViewStateField, key));
}
state.Append(viewStateChunk);
}
}
_cachedRequestViewState = true;
_requestViewState = state.ToString();
} catch (Exception e) {
ViewStateException.ThrowViewStateError(e, state.ToString());
}
}
return _requestViewState;
}
}
internal string ValidatorInvalidControl {
get {
if (_validatorInvalidControl == null) {
return String.Empty;
}
return _validatorInvalidControl;
}
}
///
/// Gets the
/// For trace data to be visible in a rendered page, you must
/// turn tracing on for that page.
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public TraceContext Trace {
get {
return Context.Trace;
}
}
///
/// Gets the
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public HttpRequest Request {
[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
get {
if (_request == null)
throw new HttpException(SR.GetString(SR.Request_not_available));
return _request;
}
}
internal HttpRequest RequestInternal {
get {
return _request;
}
}
///
/// Gets the
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public HttpResponse Response {
get {
if (_response == null)
throw new HttpException(SR.GetString(SR.Response_not_available));
return _response;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public RouteData RouteData {
get {
if (Context != null && Context.Request != null) {
// RequestContext is created on demand if not set so it should never be null
return Context.Request.RequestContext.RouteData;
}
return null;
}
}
///
/// Gets the
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public HttpServerUtility Server {
get { return Context.Server;}
}
///
/// Retrieves a
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public Cache Cache {
get {
if (_cache == null)
throw new HttpException(SR.GetString(SR.Cache_not_available));
return _cache;
}
}
///
/// Gets the
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public virtual HttpSessionState Session {
get {
if (!_sessionRetrieved) {
/* try just once to retrieve it */
_sessionRetrieved = true;
try {
_session = Context.Session;
}
catch {
// Just ignore exceptions, return null.
}
}
if (_session == null) {
throw new HttpException(SR.GetString(SR.Session_not_enabled));
}
return _session;
}
}
[
Bindable(true),
Localizable(true),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public string Title {
get {
if ((Page.Header == null) && (this.ControlState >= ControlState.ChildrenInitialized)) {
throw new InvalidOperationException(SR.GetString(SR.Page_Title_Requires_Head));
}
if (_titleToBeSet != null) {
return _titleToBeSet;
}
return Page.Header.Title;
}
set {
if (Page.Header == null) {
if (this.ControlState >= ControlState.ChildrenInitialized) {
throw new InvalidOperationException(SR.GetString(SR.Page_Title_Requires_Head));
}
else {
_titleToBeSet = value;
}
}
else {
Page.Header.Title = value;
}
}
}
[
Bindable(true),
Localizable(true),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public string MetaDescription {
get {
if ((Page.Header == null) && (this.ControlState >= ControlState.ChildrenInitialized)) {
throw new InvalidOperationException(SR.GetString(SR.Page_Description_Requires_Head));
}
if (_descriptionToBeSet != null) {
return _descriptionToBeSet;
}
return Page.Header.Description;
}
set {
if (Page.Header == null) {
if (this.ControlState >= ControlState.ChildrenInitialized) {
throw new InvalidOperationException(SR.GetString(SR.Page_Description_Requires_Head));
}
else {
_descriptionToBeSet = value;
}
}
else {
Page.Header.Description = value;
}
}
}
[
Bindable(true),
Localizable(true),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public string MetaKeywords {
get {
if ((Page.Header == null) && (this.ControlState >= ControlState.ChildrenInitialized)) {
throw new InvalidOperationException(SR.GetString(SR.Page_Keywords_Requires_Head));
}
if (_keywordsToBeSet != null) {
return _keywordsToBeSet;
}
return Page.Header.Keywords;
}
set {
if (Page.Header == null) {
if (this.ControlState >= ControlState.ChildrenInitialized) {
throw new InvalidOperationException(SR.GetString(SR.Page_Keywords_Requires_Head));
}
else {
_keywordsToBeSet = value;
}
}
else {
Page.Header.Keywords = value;
}
}
}
///
/// indicates whether the Page has PageTheme defined.
///
internal bool ContainsTheme {
get {
Debug.Assert(_preInitWorkComplete || DesignMode, "ContainsTheme should not be accessed before Page's PreInit.");
return _theme != null;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public virtual String Theme {
get {
return _themeName;
}
set {
if (_preInitWorkComplete) {
throw new InvalidOperationException(SR.GetString(SR.PropertySetBeforePageEvent, "Theme", "Page_PreInit"));
}
if (!String.IsNullOrEmpty(value) && !FileUtil.IsValidDirectoryName(value)) {
throw new ArgumentException(SR.GetString(SR.Page_theme_invalid_name, value), "Theme");
}
_themeName = value;
}
}
internal bool SupportsStyleSheets {
get {
if (_supportsStyleSheets == -1) {
if (Header != null &&
Header.StyleSheet != null &&
RequestInternal != null &&
Request.Browser != null &&
(string)Request.Browser["preferredRenderingType"] != "xhtml-mp" &&
Request.Browser.SupportsCss &&
!Page.IsCallback &&
(ScriptManager == null || !ScriptManager.IsInAsyncPostBack)) {
// We don't want to render the style sheet for XHTML mobile profile devices even though
// SupportsCss may be true because they need the CSS to be in a separate file.
// We don't want embedded styles sheet to render during a callback (VSWhidbey 420743)
_supportsStyleSheets = 1;
return true;
}
_supportsStyleSheets = 0;
return false;
}
return (_supportsStyleSheets == 1);
}
}
[
Browsable(false),
Filterable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public virtual String StyleSheetTheme {
get {
return _styleSheetName;
}
set {
if (_pageFlags[styleSheetInitialized]) {
throw new InvalidOperationException(SR.GetString(SR.SetStyleSheetThemeCannotBeSet));
}
_styleSheetName = value;
}
}
///
/// Indicates the user making the page request. This property uses the
/// Context.User property to determine where the request originates. This property
/// is read-only.
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public IPrincipal User {
get { return Context.User;}
}
internal XhtmlConformanceMode XhtmlConformanceMode {
get {
// We only want the evaluation of conformance mode to be done at most once per page request.
if (!_xhtmlConformanceModeSet) {
// The conformance mode is used to determine if backward compatible markup should
// be generated as in pre-Whidbey versions. So if an adapter is assigned, we can
// assume this is Whidbey rendering and we return the default mode that doesn't do
// backward compatible rendering.
if (DesignMode) {
_xhtmlConformanceMode = XhtmlConformanceSection.DefaultMode;
}
else {
_xhtmlConformanceMode = GetXhtmlConformanceSection().Mode;
}
_xhtmlConformanceModeSet = true;
}
return _xhtmlConformanceMode;
}
}
/*
* This protected virtual method is called by the Page to create the HtmlTextWriter
* to use for rendering. The class created is based on the TagWriter property on
* the browser capabilities.
*/
///
/// Creates an
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
protected internal virtual HtmlTextWriter CreateHtmlTextWriter(TextWriter tw) {
// Use Context.Request (rather than Request) to avoid exception in get_Request when
// Request is not available.
if (Context != null && Context.Request != null && Context.Request.Browser != null) {
return Context.Request.Browser.CreateHtmlTextWriter(tw);
}
HtmlTextWriter writer = CreateHtmlTextWriterInternal(tw, _request );
if (writer == null) {
writer = new HtmlTextWriter(tw);
}
return writer;
}
internal static HtmlTextWriter CreateHtmlTextWriterInternal(TextWriter tw, HttpRequest request) {
if (request != null && request.Browser != null) {
return request.Browser.CreateHtmlTextWriterInternal(tw);
}
// Fall back to Html 3.2
return new Html32TextWriter(tw);
}
public static HtmlTextWriter CreateHtmlTextWriterFromType(TextWriter tw, Type writerType) {
if (writerType == typeof(HtmlTextWriter)) {
return new HtmlTextWriter(tw);
}
else if (writerType == typeof(Html32TextWriter)) {
return new Html32TextWriter(tw);
}
else {
try {
// Make sure the type has the correct base class (ASURT 123677)
Util.CheckAssignableType(typeof(HtmlTextWriter), writerType);
return (HtmlTextWriter)HttpRuntime.CreateNonPublicInstance(writerType, new object[] { tw });
}
catch {
throw new HttpException(SR.GetString(SR.Invalid_HtmlTextWriter, writerType.FullName));
}
}
}
///
/// Overridden to check the Page's own ID against the one being searched.
///
public override Control FindControl(String id) {
if (StringUtil.EqualsIgnoreCase(id, PageID)) {
return this;
}
return base.FindControl(id, 0);
}
/*
* This method is implemented by the Page classes that we generate on
* the fly. It returns a has code unique to the control layout.
*/
///
/// Retrieves a hash code that is generated by
///
[EditorBrowsable(EditorBrowsableState.Never)]
public virtual int GetTypeHashCode() {
return 0;
}
/*
* Override for small efficiency win: page doesn't prepend its name
*/
internal override string GetUniqueIDPrefix() {
// Only overridde if we're at the top level
if (Parent == null)
return String.Empty;
// Use base implementation for interior nodes
return base.GetUniqueIDPrefix();
}
/*
* Called when an exception occurs in ProcessRequest
*/
///
/// Throws an
///
private bool HandleError(Exception e) {
try {
// Remember the exception to be accessed via Server.GetLastError/ClearError
Context.TempError = e;
// Raise the error event
OnError(EventArgs.Empty);
// If the error has been cleared by the event handler, nothing else to do
if (Context.TempError == null)
return true;
} finally {
Context.TempError = null;
}
// If an error page was specified, redirect to it
if (!String.IsNullOrEmpty(_errorPage)) {
// only redirect if custom errors are enabled:
if (Context.IsCustomErrorEnabled) {
_response.RedirectToErrorPage(_errorPage, CustomErrorsSection.GetSettings(Context).RedirectMode);
return true;
}
}
// Increment all of the appropriate error counters
PerfCounters.IncrementCounter(AppPerfCounter.ERRORS_UNHANDLED);
string traceString = null;
if (Context.TraceIsEnabled) {
Trace.Warn(SR.GetString(SR.Unhandled_Err_Error), null, e);
if (Trace.PageOutput) {
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
// Try to build the profile tree so the control hierarchy will show up
BuildPageProfileTree(false);
// these three calls will happen again at the end of the request, but
// in order to have the full trace log on the rendered page, we need
// to call them now.
Trace.EndRequest();
Trace.StopTracing();
Trace.StatusCode = 500;
Trace.Render(htw);
traceString = sw.ToString();
}
}
// If the exception is an HttpException with a formatter, just
// rethrow it instead of a new one (ASURT 45479)
if (HttpException.GetErrorFormatter(e) != null) {
return false;
}
// Don't touch security exceptions (ASURT 78366)
if (e is System.Security.SecurityException)
return false;
throw new HttpUnhandledException(null, traceString, e);
}
///
/// Gets a value indicating whether the page is being created in response to a
/// cross page postback.
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public bool IsCrossPagePostBack {
get {
return _isCrossPagePostBack;
}
}
internal bool IsExportingWebPart {
get {
return _pageFlags[isExportingWebPart];
}
}
internal bool IsExportingWebPartShared {
get {
return _pageFlags[isExportingWebPartShared];
}
}
/*
* Returns true if this is a postback, which means it has some
* previous viewstate to reload. Use this in the Load method to differentiate
* an initial load from a postback reload.
*/
///
/// Gets a value indicating whether the page is being loaded in response to a
/// client postback, or if it is being loaded and accessed for the first time.
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public bool IsPostBack {
get {
if (_requestValueCollection == null)
return false;
// Treat it as postback if the page is created thru cross page postback.
if (_isCrossPagePostBack)
return true;
// Don't treat it as a postback if the page is posted from cross page
if (_pageFlags[isCrossPagePostRequest])
return false;
// If we're in a Transfer/Execute, never treat as postback (ASURT 121000)
// Unless we are being transfered back to the original page, in which case
// it is ok to treat it as a postback (VSWhidbey 117747)
// Note that Context.Handler could be null (VSWhidbey 159775)
if (Context.ServerExecuteDepth > 0 &&
(Context.Handler == null || GetType() != Context.Handler.GetType())) {
return false;
}
// If the page control layout has changed, pretend that we are in
// a non-postback situation.
return !_fPageLayoutChanged;
}
}
internal NameValueCollection RequestValueCollection {
get { return _requestValueCollection; }
}
[
Browsable(false),
DefaultValue(true),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
EditorBrowsable(EditorBrowsableState.Never),
]
public virtual bool EnableEventValidation {
get {
return _enableEventValidation;
}
set {
if (this.ControlState > ControlState.FrameworkInitialized) {
throw new InvalidOperationException(SR.GetString(SR.PropertySetAfterFrameworkInitialize, "EnableEventValidation"));
}
_enableEventValidation = value;
}
}
[
Browsable(false)
]
public override bool EnableViewState {
get {
return base.EnableViewState;
}
set {
base.EnableViewState = value;
}
}
[
Browsable(false),
DefaultValue(ViewStateEncryptionMode.Auto),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
EditorBrowsable(EditorBrowsableState.Never),
]
public ViewStateEncryptionMode ViewStateEncryptionMode {
get {
return _encryptionMode;
}
set {
if (this.ControlState > ControlState.FrameworkInitialized) {
throw new InvalidOperationException(SR.GetString(SR.PropertySetAfterFrameworkInitialize, "ViewStateEncryptionMode"));
}
if (value < ViewStateEncryptionMode.Auto || value > ViewStateEncryptionMode.Never) {
throw new ArgumentOutOfRangeException("value");
}
_encryptionMode = value;
}
}
///
/// Setting this property helps prevent one-click attacks (ASURT 126375)
///
[
Browsable(false)
]
public string ViewStateUserKey {
get {
return _viewStateUserKey;
}
set {
// Make sure it's not called too late
if (ControlState >= ControlState.Initialized) {
throw new HttpException(SR.GetString(SR.Too_late_for_ViewStateUserKey));
}
_viewStateUserKey = value;
}
}
[
Browsable(false),
EditorBrowsable(EditorBrowsableState.Never)
]
public override string ID {
get {
return base.ID;
}
set {
base.ID = value;
}
}
[
Browsable(false)
]
public override bool Visible {
[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
get {
return base.Visible;
}
set {
base.Visible = value;
}
}
///
/// Decrypt the string using symmetric algorithm defined in config.
///
internal static string DecryptString(string s) {
// DevDiv Bugs 137864: Hash is the default for higher compatibility because it retains
// the behavior that a given input always results in the same output.
return DecryptStringWithIV(s, IVType.Hash);
}
// DevDiv Bugs 137864: Add IVType overload for improved encryption semantics
// Note: Not an actual overload because this breaks the reflection that SWE 1.0 uses to call this method.
internal static string DecryptStringWithIV(string s, IVType ivType) {
if (s == null)
return null;
byte[] buf = HttpServerUtility.UrlTokenDecode(s);
if (buf != null)
buf = MachineKeySection.EncryptOrDecryptData(false, buf, null, 0, buf.Length, false, false, ivType);
if (buf == null)
throw new HttpException(SR.GetString(SR.ViewState_InvalidViewState));
return Encoding.UTF8.GetString(buf);
}
/*
* Performs intialization of the page required by the designer.
*/
///
/// Performs any initialization of the page that is required by RAD designers.
///
[EditorBrowsable(EditorBrowsableState.Never)]
public void DesignerInitialize() {
InitRecursive(null);
}
internal NameValueCollection GetCollectionBasedOnMethod(bool dontReturnNull) {
// Get the right NameValueCollection base on the method
if (_request.HttpVerb == HttpVerb.POST) {
return (dontReturnNull || _request.HasForm) ? _request.Form : null;
}
else {
return (dontReturnNull || _request.HasQueryString) ? _request.QueryString : null;
}
}
private bool DetermineIsExportingWebPart() {
byte[] queryString = Request.QueryStringBytes;
if ((queryString == null) || (queryString.Length < 28)) {
return false;
}
// query string is never unicode - it can be UTF-8, in which case it's fine to compare character by character
// because what we're looking for is only in the low-ASCII range.
if ((queryString[0] != '_') ||
(queryString[1] != '_') ||
(queryString[2] != 'W') ||
(queryString[3] != 'E') ||
(queryString[4] != 'B') ||
(queryString[5] != 'P') ||
(queryString[6] != 'A') ||
(queryString[7] != 'R') ||
(queryString[8] != 'T') ||
(queryString[9] != 'E') ||
(queryString[10] != 'X') ||
(queryString[11] != 'P') ||
(queryString[12] != 'O') ||
(queryString[13] != 'R') ||
(queryString[14] != 'T') ||
(queryString[15] != '=') ||
(queryString[16] != 't') ||
(queryString[17] != 'r') ||
(queryString[18] != 'u') ||
(queryString[19] != 'e') ||
(queryString[20] != '&')) {
return false;
}
// Setting the export flag so that personalization can know not to toggle modes,
// which would create a new subrequest and kill the export.
_pageFlags.Set(isExportingWebPart);
return true;
}
/*
* Determine which of the following three cases we're in:
* - Initial request. No postback, return null
* - GET postback request. Return Context.Request.QueryString
* - POST postback request. Return Context.Request.Form
*/
///
/// Determines the type of request made for the page based on if the page was a
/// postback, and whether a GET or POST method was used for the request.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
protected internal virtual NameValueCollection DeterminePostBackMode() {
if (Context.Request == null)
return null;
// If PreventPostback is set, don't treat as postback (VSWhidbey 181013).
if (Context.PreventPostback)
return null;
NameValueCollection ret = GetCollectionBasedOnMethod(false /*dontReturnNull*/);
if (ret == null)
return null;
// Some devices may send incorrect POST strings without trailing equal signs
// if the last field is empty. Detecting this:
bool isPostback = false;
String [] nullValues = ret.GetValues(null);
if (nullValues != null) {
int numNull = nullValues.Length;
for (int i = 0; i < numNull; i++) {
if (nullValues[i].StartsWith(ViewStateFieldPrefixID, StringComparison.Ordinal) || nullValues[i] == postEventSourceID) {
isPostback = true;
break;
}
}
}
// If there is no state or postEventSourceID in the request,
// it's an initial request
//
if (ret[ViewStateFieldPrefixID] == null &&
ret[ViewStateFieldCountID] == null &&
ret[postEventSourceID] == null &&
!isPostback)
ret = null;
// If page was posted due to a HttpResponse.Redirect, ignore the postback.
else if (Request.QueryStringText.IndexOf(HttpResponse.RedirectQueryStringAssignment, StringComparison.Ordinal) != -1)
ret = null;
return ret;
}
///
/// This method is used to encrypte previous page hidden form variable that is sent to the client
/// during cross page post. This is to prevent spoofed previous pages from being instantiated and executed.
/// This is also used by the AssemblyResourceLoader to prevent tampering of URLs.
///
internal static string EncryptString(string s) {
// DevDiv Bugs 137864: Hash is the default for higher compatibility because it retains
// the behavior that a given input always results in the same output.
return EncryptStringWithIV(s, IVType.Hash);
}
// DevDiv Bugs 137864: IVType for improved encryption semantics
// Note: Not an actual overload because this breaks the reflection that SWE 1.0 uses to call this method.
internal static string EncryptStringWithIV(string s, IVType ivType) {
Debug.Assert(!String.IsNullOrEmpty(s));
byte[] buf = Encoding.UTF8.GetBytes(s);
buf = MachineKeySection.EncryptOrDecryptData(true, buf, null, 0, buf.Length, false, false, ivType);
return HttpServerUtility.UrlTokenEncode(buf);
}
private void LoadAllState() {
object state = LoadPageStateFromPersistenceMedium();
IDictionary controlStates = null;
Pair allSavedViewState = null;
Pair statePair = state as Pair;
if (state != null) {
controlStates = statePair.First as IDictionary;
allSavedViewState = statePair.Second as Pair;
}
// The control state (controlStatePair) was saved as an dictionary of objects:
// 1. A list of controls that require postback[under the page id]
// 2. A dictionary of control states
if (controlStates != null) {
_controlsRequiringPostBack = (ArrayList)controlStates[PageRegisteredControlsThatRequirePostBackKey];
if (_registeredControlsRequiringControlState != null) {
foreach (Control ctl in _registeredControlsRequiringControlState) {
ctl.LoadControlStateInternal(controlStates[ctl.UniqueID]);
}
}
}
// The view state (allSavedViewState) was saved as an array of objects:
// 1. The hash code string
// 2. The state of the entire control hierarchy
// Is there any state?
if (allSavedViewState != null) {
// Get the hash code from the state
string hashCode = (string) allSavedViewState.First;
// If it's different from the current one, the layout has changed
int viewhash = Int32.Parse(hashCode, NumberFormatInfo.InvariantInfo);
_fPageLayoutChanged = viewhash != GetTypeHashCode();
// If the page control layout has changed, don't attempt to
// load any more state.
if (!_fPageLayoutChanged) {
// UNCOMMENT FOR DEBUG OUTPUT
// WalkViewState(allSavedViewState.Second, null, 0);
LoadViewStateRecursive(allSavedViewState.Second);
}
}
}
/*
* Override this method to persist view state to something other
* than hidden fields (
*/
///
/// Loads any saved view state information to the page. Override this method if
/// you want to load the page view state in anything other than a hidden field.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
protected internal virtual object LoadPageStateFromPersistenceMedium() {
PageStatePersister persister = PageStatePersister;
try {
persister.Load();
}
catch (HttpException e) {
//VSWhidbey 201601. Ignore the exception in cross-page post
//since this might be a cross application postback.
if (_pageFlags[isCrossPagePostRequest]) {
return null;
}
e.WebEventCode = WebEventCodes.RuntimeErrorViewStateFailure;
throw;
}
return new Pair(persister.ControlState, persister.ViewState);
}
internal void LoadScrollPosition() {
// Don't load scroll position if the previous page was a crosspage postback
if (_previousPagePath != null) {
return;
}
// Load the scroll positions from the request if they exist
if (_requestValueCollection != null) {
string xpos = _requestValueCollection[_scrollPositionXID];
if (xpos != null) {
if (!Int32.TryParse(xpos, out _scrollPositionX)) {
_scrollPositionX = 0;
}
}
string ypos = _requestValueCollection[_scrollPositionYID];
if (ypos != null) {
if (!Int32.TryParse(ypos, out _scrollPositionY)) {
_scrollPositionY = 0;
}
}
}
}
internal IStateFormatter CreateStateFormatter() {
return new ObjectStateFormatter(this, true);
}
// Decomposes the large view state string into pieces of size <= MaxPageStateFieldLength
internal ICollection DecomposeViewStateIntoChunks() {
string state = ClientState;
if (state == null) return null;
// Any value less than or equal to 0 turns off chunking
if (MaxPageStateFieldLength <= 0) {
ArrayList chunks = new ArrayList(1);
chunks.Add(state);
return chunks;
}
// Break up the view state into the correctly sized chunks
int numFullChunks = ClientState.Length / MaxPageStateFieldLength;
ArrayList viewStateChunks = new ArrayList(numFullChunks+1);
int curPos = 0;
for (int i=0; i 1) {
writer.Write("");
}
int count = 0;
foreach (string stateChunk in viewStateChunks) {
writer.Write(" 0) {
countString = count.ToString(CultureInfo.InvariantCulture);
writer.Write(countString);
}
writer.Write("\" id=\"");
writer.Write(ViewStateFieldPrefixID);
if (count > 0) {
writer.Write(countString);
}
writer.Write("\" value=\"");
writer.Write(stateChunk);
writer.WriteLine("\" />");
++count;
}
}
else {
// ASURT 106992
// Need to always render out the viewstate field so alternate viewstate persistence will get called
writer.Write("\r\n");
}
}
///
/// Default markup for begin form.
///
internal void BeginFormRender(HtmlTextWriter writer, string formUniqueID) {
// DevDiv 27324: Form should render div tag around hidden inputs
// DevDiv 33149: backward compat. switch for obsolete rendering
// Dev10 705089: in 4.0 mode or later, we render the div block with class="aspNetHidden" for xHTML conformance.
bool renderDivAroundHiddenInputs = RenderDivAroundHiddenInputs(writer);
if (renderDivAroundHiddenInputs) {
writer.WriteLine();
if (RenderingCompatibility >= VersionUtil.Framework40) {
writer.Write("");
}
else {
writer.Write("");
}
}
ClientScript.RenderHiddenFields(writer);
RenderViewStateFields(writer);
if (renderDivAroundHiddenInputs) {
writer.WriteLine("");
}
if (ClientSupportsJavaScript) {
if (MaintainScrollPositionOnPostBack && _requireScrollScript == false) {
ClientScript.RegisterHiddenField(_scrollPositionXID, _scrollPositionX.ToString(CultureInfo.InvariantCulture));
ClientScript.RegisterHiddenField(_scrollPositionYID, _scrollPositionY.ToString(CultureInfo.InvariantCulture));
ClientScript.RegisterStartupScript(typeof(Page), PageScrollPositionScriptKey, @"
theForm.oldSubmit = theForm.submit;
theForm.submit = WebForm_SaveScrollPositionSubmit;
theForm.oldOnSubmit = theForm.onsubmit;
theForm.onsubmit = WebForm_SaveScrollPositionOnSubmit;
" + (IsPostBack ? @"
theForm.oldOnLoad = window.onload;
window.onload = WebForm_RestoreScrollPosition;
" : String.Empty), true);
RegisterWebFormsScript();
_requireScrollScript = true;
}
// VSWhidbey 375885, Render the focus script later (specifically for interaction with scrollposition)
if (ClientSupportsFocus && Form != null && (RenderFocusScript || (Form.DefaultFocus.Length > 0) || (Form.DefaultButton.Length > 0))) {
string focusedControlId = String.Empty;
// Someone calling SetFocus(controlId) is the most precendent
if (FocusedControlID.Length > 0) {
focusedControlId = FocusedControlID;
}
else if (FocusedControl != null) {
if (FocusedControl.Visible) {
focusedControlId = FocusedControl.ClientID;
}
}
else if (ValidatorInvalidControl.Length > 0) {
focusedControlId = ValidatorInvalidControl;
}
// AutoPostBack focus is the second least precendent
else if (LastFocusedControl.Length > 0) {
// This doesn't have to be an ASP.NET control
focusedControlId = LastFocusedControl;
}
// DefaultFocus is the next
else if (Form.DefaultFocus.Length > 0) {
// VSWhidbey 379627: Always render the default focus, regardless if we can find it, or if its visible
focusedControlId = Form.DefaultFocus;
}
// DefaultButton is the least precendent
else if (Form.DefaultButton.Length > 0) {
focusedControlId = Form.DefaultButton;
}
// If something got focused, render some script to focus it only if its safe
int match;
if (focusedControlId.Length > 0 && !CrossSiteScriptingValidation.IsDangerousString(focusedControlId, out match) &&
CrossSiteScriptingValidation.IsValidJavascriptId(focusedControlId)) {
ClientScript.RegisterClientScriptResource(typeof(HtmlForm), "Focus.js");
if (!ClientScript.IsClientScriptBlockRegistered(typeof(HtmlForm), "Focus")) {
RegisterWebFormsScript();
ClientScript.RegisterStartupScript(
typeof(HtmlForm),
"Focus",
"WebForm_AutoFocus('" + Util.QuoteJScriptString(focusedControlId) + "');",
true);
}
IScriptManager scriptManager = ScriptManager;
if (scriptManager != null) {
scriptManager.SetFocusInternal(focusedControlId);
}
}
}
// Set the necessary stuff to re-enable disabled controls on the client
if (Form.SubmitDisabledControls && (EnabledControls.Count > 0) &&
(_request.Browser.W3CDomVersion.Major > 0)) {
foreach (Control control in EnabledControls) {
ClientScript.RegisterArrayDeclaration(EnabledControlArray, "'" + control.ClientID + "'");
}
ClientScript.RegisterOnSubmitStatement(typeof(Page), PageReEnableControlsScriptKey, "WebForm_ReEnableControls();");
RegisterWebFormsScript();
}
if (_fRequirePostBackScript) {
RenderPostBackScript(writer, formUniqueID);
}
if (_fRequireWebFormsScript) {
RenderWebFormsScript(writer);
}
}
ClientScript.RenderClientScriptBlocks(writer);
}
internal void EndFormRenderArrayAndExpandoAttribute(HtmlTextWriter writer, string formUniqueID) {
if (ClientSupportsJavaScript) {
ClientScript.RenderArrayDeclares(writer);
ClientScript.RenderExpandoAttribute(writer);
}
}
internal void EndFormRenderHiddenFields(HtmlTextWriter writer, string formUniqueID) {
if (RequiresViewStateEncryptionInternal) {
ClientScript.RegisterHiddenField(ViewStateEncryptionID, String.Empty);
}
if (_containsCrossPagePost) {
string path = EncryptString(Request.CurrentExecutionFilePath);
ClientScript.RegisterHiddenField(previousPageID, path);
}
if (EnableEventValidation) {
ClientScript.SaveEventValidationField();
}
if (ClientScript.HasRegisteredHiddenFields) {
bool renderDivAroundHiddenInputs = RenderDivAroundHiddenInputs(writer);
if (renderDivAroundHiddenInputs) {
writer.WriteLine();
if (RenderingCompatibility >= VersionUtil.Framework40) {
writer.AddAttribute(HtmlTextWriterAttribute.Class, HiddenClassName);
}
writer.RenderBeginTag(HtmlTextWriterTag.Div);
}
ClientScript.RenderHiddenFields(writer);
if (renderDivAroundHiddenInputs) {
writer.RenderEndTag(); // DIV
}
}
}
internal void EndFormRenderPostBackAndWebFormsScript(HtmlTextWriter writer, string formUniqueID) {
if (ClientSupportsJavaScript) {
if (_fRequirePostBackScript && !_fPostBackScriptRendered) {
RenderPostBackScript(writer, formUniqueID);
}
if (_fRequireWebFormsScript && !_fWebFormsScriptRendered)
RenderWebFormsScript(writer);
}
ClientScript.RenderClientStartupScripts(writer);
}
///
/// Default markup for end form.
///
internal void EndFormRender(HtmlTextWriter writer, string formUniqueID) {
EndFormRenderArrayAndExpandoAttribute(writer, formUniqueID);
EndFormRenderHiddenFields(writer, formUniqueID);
EndFormRenderPostBackAndWebFormsScript(writer, formUniqueID);
}
// VSWhidbey 475945: For ClientScriptManager.GetPostBackEventReference() to check if '$' should be used for id separator
internal bool IsInOnFormRender {
get {
return _inOnFormRender;
}
}
///
/// Called by both adapters and default rendering prior to form rendering.
///
internal void OnFormRender() {
// Make sure there is only one form tag (ASURT 18891, 18894)
if (_fOnFormRenderCalled) {
throw new HttpException(SR.GetString(SR.Multiple_forms_not_allowed));
}
_fOnFormRenderCalled = true;
_inOnFormRender = true;
}
///
/// Called by both adapters and default rendering after form rendering.
///
internal void OnFormPostRender(HtmlTextWriter writer) {
_inOnFormRender = false;
if (_postFormRenderDelegate != null) {
_postFormRenderDelegate(writer, null);
}
}
///
/// Needed by adapters which do more than one pass, so that OnFormRender can be called more than once.
///
//
internal void ResetOnFormRenderCalled() {
_fOnFormRenderCalled = false;
}
///
/// Sets focus to the specified control
///
public void SetFocus(Control control) {
if (control == null) {
throw new ArgumentNullException("control");
}
if (Form == null) {
throw new InvalidOperationException(SR.GetString(SR.Form_Required_For_Focus));
}
if (Form.ControlState == ControlState.PreRendered) {
throw new InvalidOperationException(SR.GetString(SR.Page_MustCallBeforeAndDuringPreRender, "SetFocus"));
}
_focusedControl = control;
_focusedControlID = null;
RegisterFocusScript();
}
///
/// Sets focus to the specified client id
///
public void SetFocus(string clientID) {
if ((clientID == null) || (clientID.Trim().Length == 0)) {
throw new ArgumentNullException("clientID");
}
if (Form == null) {
throw new InvalidOperationException(SR.GetString(SR.Form_Required_For_Focus));
}
if (Form.ControlState == ControlState.PreRendered) {
throw new InvalidOperationException(SR.GetString(SR.Page_MustCallBeforeAndDuringPreRender, "SetFocus"));
}
_focusedControlID = clientID.Trim();
_focusedControl = null;
RegisterFocusScript();
}
internal void SetValidatorInvalidControlFocus(string clientID) {
if (String.IsNullOrEmpty(_validatorInvalidControl)) {
_validatorInvalidControl = clientID;
RegisterFocusScript();
}
}
//Note: BCL should provide a way to abort threads without asserting ControlThread for platform internal code.
[SecurityPermission(SecurityAction.Assert, ControlThread = true)]
internal static void ThreadResetAbortWithAssert() {
Thread.ResetAbort();
}
/*
* Enables controls to obtain client-side script function that will cause
* (when invoked) a server post-back to the form.
*/
///
///
/// Associates the reference to the control that will
/// process the postback on the server.
///
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
[Obsolete("The recommended alternative is ClientScript.GetPostBackEventReference. http://go.microsoft.com/fwlink/?linkid=14202")]
public string GetPostBackEventReference(Control control) {
return ClientScript.GetPostBackEventReference(control, String.Empty);
}
/*
* Enables controls to obtain client-side script function that will cause
* (when invoked) a server post-back to the form.
* argument: Parameter that will be passed to control on server
*/
///
/// Passes a parameter to the control that will do the postback processing on the
/// server.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
[Obsolete("The recommended alternative is ClientScript.GetPostBackEventReference. http://go.microsoft.com/fwlink/?linkid=14202")]
public string GetPostBackEventReference(Control control,
string argument) {
return ClientScript.GetPostBackEventReference(control, argument);
}
///
/// This returs a string that can be put in client event to post back to the named control
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
[Obsolete("The recommended alternative is ClientScript.GetPostBackEventReference. http://go.microsoft.com/fwlink/?linkid=14202")]
public string GetPostBackClientEvent(Control control, string argument) {
return ClientScript.GetPostBackEventReference(control, argument);
}
///
/// This returs a string that can be put in client event to post back to the named control
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
[Obsolete("The recommended alternative is ClientScript.GetPostBackClientHyperlink. http://go.microsoft.com/fwlink/?linkid=14202")]
public string GetPostBackClientHyperlink(Control control, string argument) {
return ClientScript.GetPostBackClientHyperlink(control, argument, false);
}
internal void InitializeStyleSheet() {
if (_pageFlags[styleSheetInitialized]) {
return;
}
String styleSheetName = StyleSheetTheme;
if (!String.IsNullOrEmpty(styleSheetName)) {
BuildResultCompiledType resultType = ThemeDirectoryCompiler.GetThemeBuildResultType(
Context, styleSheetName);
if (resultType != null) {
_styleSheet = (PageTheme)resultType.CreateInstance();
_styleSheet.Initialize(this, true);
}
else {
throw new HttpException(SR.GetString(SR.Page_theme_not_found, styleSheetName));
}
}
_pageFlags.Set(styleSheetInitialized);
}
private void InitializeThemes() {
String themeName = Theme;
if (!String.IsNullOrEmpty(themeName)) {
BuildResultCompiledType resultType = ThemeDirectoryCompiler.GetThemeBuildResultType(
Context, themeName);
if (resultType != null) {
_theme = (PageTheme)resultType.CreateInstance();
_theme.Initialize(this, false);
}
else {
throw new HttpException(SR.GetString(SR.Page_theme_not_found, themeName));
}
}
}
[EditorBrowsable(EditorBrowsableState.Never)]
protected internal void AddContentTemplate(string templateName, ITemplate template) {
if (_contentTemplateCollection == null) {
_contentTemplateCollection = new Hashtable(11, StringComparer.OrdinalIgnoreCase);
}
try {
_contentTemplateCollection.Add(templateName, template);
}
catch (ArgumentException) {
throw new HttpException(SR.GetString(SR.MasterPage_Multiple_content, templateName));
}
}
private void ApplyMasterPage() {
if (Master != null) {
ArrayList appliedMasterPages = new ArrayList();
appliedMasterPages.Add(_masterPageFile.VirtualPathString.ToLower(CultureInfo.InvariantCulture));
MasterPage.ApplyMasterRecursive(Master, appliedMasterPages);
}
}
internal void ApplyControlSkin(Control ctrl) {
if (_theme != null) {
_theme.ApplyControlSkin(ctrl);
}
}
[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
internal bool ApplyControlStyleSheet(Control ctrl) {
if (_styleSheet != null) {
_styleSheet.ApplyControlSkin(ctrl);
return true;
}
return false;
}
internal void RegisterFocusScript() {
if (ClientSupportsFocus && (_requireFocusScript == false)) {
ClientScript.RegisterHiddenField(lastFocusID, String.Empty);
_requireFocusScript = true;
// If there are any partial caching controls on the stack, forward the call to them
if (_partialCachingControlStack != null) {
foreach(BasePartialCachingControl c in _partialCachingControlStack) {
c.RegisterFocusScript();
}
}
}
}
internal void RegisterPostBackScript() {
if (!ClientSupportsJavaScript) {
return;
}
if (_fPostBackScriptRendered) {
return;
}
if (!_fRequirePostBackScript) {
ClientScript.RegisterHiddenField(postEventSourceID, String.Empty);
ClientScript.RegisterHiddenField(postEventArgumentID, String.Empty);
_fRequirePostBackScript = true;
}
// If there are any partial caching controls on the stack, forward the call to them
if (_partialCachingControlStack != null) {
foreach(BasePartialCachingControl c in _partialCachingControlStack) {
c.RegisterPostBackScript();
}
}
}
private void RenderPostBackScript(HtmlTextWriter writer, string formUniqueID) {
writer.Write(EnableLegacyRendering ?
ClientScriptManager.ClientScriptStartLegacy :
ClientScriptManager.ClientScriptStart);
if (PageAdapter != null) {
writer.Write("var theForm = ");
writer.Write(PageAdapter.GetPostBackFormReference(formUniqueID));
writer.WriteLine(";");
}
else {
writer.Write("var theForm = document.forms['");
writer.Write(formUniqueID);
writer.WriteLine("'];");
// VSWhidbey 392597: Try to use the document._ctl00 syntax since PocketPC doesn't support document.forms[id]
writer.Write("if (!theForm) {\r\n theForm = document.");
writer.Write(formUniqueID);
writer.WriteLine(";\r\n}");
}
writer.WriteLine(@"function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}");
writer.WriteLine(EnableLegacyRendering ?
ClientScriptManager.ClientScriptEndLegacy :
ClientScriptManager.ClientScriptEnd);
_fPostBackScriptRendered = true;
}
///
/// Allows controls on a page to access to the _doPostBack and _doCallback JavaScript handlers on the
/// client. This method can be called multiple times by multiple controls. It should
/// render only one instance of the WebForms script.
///
internal void RegisterWebFormsScript() {
if (ClientSupportsJavaScript) {
if (_fWebFormsScriptRendered) {
return;
}
RegisterPostBackScript();
_fRequireWebFormsScript = true;
// If there are any partial caching controls on the stack, forward the call to them
if (_partialCachingControlStack != null) {
foreach(BasePartialCachingControl c in _partialCachingControlStack) {
c.RegisterWebFormsScript();
}
}
}
}
private void RenderWebFormsScript(HtmlTextWriter writer) {
ClientScript.RenderWebFormsScript(writer);
_fWebFormsScriptRendered = true;
}
///
/// Determines if the client script block is registered with the page.
///
[Obsolete("The recommended alternative is ClientScript.IsClientScriptBlockRegistered(string key). http://go.microsoft.com/fwlink/?linkid=14202")]
public bool IsClientScriptBlockRegistered(string key) {
return ClientScript.IsClientScriptBlockRegistered(typeof(Page), key);
}
///
/// Determines if the client startup script is registered with the
/// page.
///
[Obsolete("The recommended alternative is ClientScript.IsStartupScriptRegistered(string key). http://go.microsoft.com/fwlink/?linkid=14202")]
public bool IsStartupScriptRegistered(string key) {
return ClientScript.IsStartupScriptRegistered(typeof(Page), key);
}
///
/// Declares a value that will be declared as a JavaScript array declaration
/// when the page renders. This can be used by script-based controls to declare
/// themselves within an array so that a client script library can work with
/// all the controls of the same type.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
[Obsolete("The recommended alternative is ClientScript.RegisterArrayDeclaration(string arrayName, string arrayValue). http://go.microsoft.com/fwlink/?linkid=14202")]
public void RegisterArrayDeclaration(string arrayName, string arrayValue) {
ClientScript.RegisterArrayDeclaration(arrayName, arrayValue);
}
///
///
/// Allows controls to automatically register a hidden field on the form. The
/// field will be emitted when the form control renders itself.
///
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
[Obsolete("The recommended alternative is ClientScript.RegisterHiddenField(string hiddenFieldName, string hiddenFieldInitialValue). http://go.microsoft.com/fwlink/?linkid=14202")]
public virtual void RegisterHiddenField(string hiddenFieldName, string hiddenFieldInitialValue) {
ClientScript.RegisterHiddenField(hiddenFieldName, hiddenFieldInitialValue);
}
///
/// Prevents controls from sending duplicate blocks of
/// client-side script to the client. Any script blocks with the same
///
[Obsolete("The recommended alternative is ClientScript.RegisterClientScriptBlock(Type type, string key, string script). http://go.microsoft.com/fwlink/?linkid=14202")]
[EditorBrowsable(EditorBrowsableState.Advanced)]
public virtual void RegisterClientScriptBlock(string key, string script) {
ClientScript.RegisterClientScriptBlock(typeof(Page), key, script);
}
///
///
/// Allows controls to keep duplicate blocks of client-side script code from
/// being sent to the client. Any script blocks with the same
///
[Obsolete("The recommended alternative is ClientScript.RegisterStartupScript(Type type, string key, string script). http://go.microsoft.com/fwlink/?linkid=14202")]
[EditorBrowsable(EditorBrowsableState.Advanced)]
public virtual void RegisterStartupScript(string key, string script) {
ClientScript.RegisterStartupScript(typeof(Page), key, script, false);
}
///
/// Allows a control to access a the client
///
///
[Obsolete("The recommended alternative is ClientScript.RegisterOnSubmitStatement(Type type, string key, string script). http://go.microsoft.com/fwlink/?linkid=14202")]
[EditorBrowsable(EditorBrowsableState.Advanced)]
public void RegisterOnSubmitStatement(string key, string script) {
ClientScript.RegisterOnSubmitStatement(typeof(Page), key, script);
}
internal void RegisterEnabledControl(Control control) {
EnabledControls.Add(control);
}
///
/// If called, Control State for this control will be persisted.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
public void RegisterRequiresControlState(Control control) {
if (control == null) {
throw new ArgumentException(SR.GetString(SR.Page_ControlState_ControlCannotBeNull));
}
if (control.ControlState == ControlState.PreRendered) {
throw new InvalidOperationException(SR.GetString(SR.Page_MustCallBeforeAndDuringPreRender, "RegisterRequiresControlState"));
}
if (_registeredControlsRequiringControlState == null) {
_registeredControlsRequiringControlState = new ControlSet();
}
// Don't do anything if RegisterRequiresControlState is called multiple times on the same control.
if (!_registeredControlsRequiringControlState.Contains(control)) {
_registeredControlsRequiringControlState.Add(control);
IDictionary controlState = (IDictionary)PageStatePersister.ControlState;
if (controlState != null) {
string uniqueID = control.UniqueID;
// VSWhidbey 422416: We allow control state loaded only once, to
// match the same behavior of ViewState loading in Control.AddedControl
// method which ViewState is removed after applied once. The
// scenario is having a control to be re-parented multiple times.
// Note: We can't call remove here, because we may be in the middle of iterating thru
// the keys of controlState(within in a call to RegisterRequiresClearChildControlState),
// so we just remember that we loaded this control's control state
if (!ControlStateLoadedControlIds.Contains(uniqueID)) {
control.LoadControlStateInternal(controlState[uniqueID]);
ControlStateLoadedControlIds.Add(uniqueID);
}
}
}
}
public bool RequiresControlState(Control control) {
return (_registeredControlsRequiringControlState != null && _registeredControlsRequiringControlState.Contains(control));
}
///
/// If called, Control State for this control will no longer persisted.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
public void UnregisterRequiresControlState(Control control) {
if (control == null) {
throw new ArgumentException(SR.GetString(SR.Page_ControlState_ControlCannotBeNull));
}
if (_registeredControlsRequiringControlState == null) {
return;
}
_registeredControlsRequiringControlState.Remove(control);
}
internal bool ShouldLoadControlState(Control control) {
if (_registeredControlsRequiringClearChildControlState == null) return true;
foreach (Control cleared in _registeredControlsRequiringClearChildControlState.Keys) {
if (control != cleared && control.IsDescendentOf(cleared)) return false;
}
return true;
}
internal void RegisterRequiresClearChildControlState(Control control) {
if (_registeredControlsRequiringClearChildControlState == null) {
_registeredControlsRequiringClearChildControlState = new HybridDictionary();
_registeredControlsRequiringClearChildControlState.Add(control, true);
}
else if (_registeredControlsRequiringClearChildControlState[control] == null) {
_registeredControlsRequiringClearChildControlState.Add(control, true);
}
IDictionary controlState = (IDictionary)PageStatePersister.ControlState;
if (controlState != null) {
// Clear out the control state for children of this control
List controlsToClear = new List(controlState.Count);
foreach (string id in controlState.Keys) {
Control controlWithState = FindControl(id);
if (controlWithState != null && controlWithState.IsDescendentOf(control)) {
controlsToClear.Add(id);
}
}
foreach (string id in controlsToClear) {
controlState[id] = null;
}
}
}
///
/// Registers a control as one that requires postback handling.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
public void RegisterRequiresPostBack(Control control) {
// Fail if the control is not an IPostBackDataHandler (VSWhidbey 184483)
if (!(control is IPostBackDataHandler)) {
IPostBackDataHandler dataHandler = control.AdapterInternal as IPostBackDataHandler;
if (dataHandler == null)
throw new HttpException(SR.GetString(SR.Ctrl_not_data_handler));
}
if (_registeredControlsThatRequirePostBack == null)
_registeredControlsThatRequirePostBack = new ArrayList();
_registeredControlsThatRequirePostBack.Add(control.UniqueID);
}
// Push a BasePartialCachingControl on the stack of registered caching controls
internal void PushCachingControl(BasePartialCachingControl c) {
// Create the stack on demand
if (_partialCachingControlStack == null) {
_partialCachingControlStack = new Stack();
}
_partialCachingControlStack.Push(c);
}
// Pop a BasePartialCachingControl from the stack of registered caching controls
internal void PopCachingControl() {
Debug.Assert(_partialCachingControlStack != null);
_partialCachingControlStack.Pop();
}
/*
* This method will process the data posted back in the request header.
* The collection of posted data keys consists of three types :
* 1. Fully qualified ids of controls. The associated value is the data
* posted back by the browser for an intrinsic html element.
* 2. Fully qualified ids of controls that have explicitly registered that
* they want to be notified on postback. This is required for intrinsic
* html elements that for some states do not postback data ( e.g. a select
* when there is no selection, a checkbox or radiobutton that is not checked )
* The associated value for these keys is not relevant.
* 3. Framework generated hidden fields for event processing, whose values are
* set by client-side script prior to postback.
*
* This method handles the process of notifying the relevant controls that a postback
* has occurred, via the IPostBackDataHandler interface.
*
* It can potentially be called twice: before and after LoadControl. This is to
* handle the case where users programmatically add controls in Page_Load (ASURT 29045).
*/
private void ProcessPostData(NameValueCollection postData, bool fBeforeLoad) {
if (_changedPostDataConsumers == null)
_changedPostDataConsumers = new ArrayList();
// identify controls that have postback data
if (postData != null) {
foreach (string postKey in postData) {
if (postKey != null) {
// Ignore system post fields
if (IsSystemPostField(postKey))
continue;
Control ctrl = FindControl(postKey);
if (ctrl == null) {
if (fBeforeLoad) {
// It was not found, so keep track of it for the post load attempt
if (_leftoverPostData == null)
_leftoverPostData = new NameValueCollection();
_leftoverPostData.Add(postKey, null);
}
continue;
}
IPostBackDataHandler consumer = ctrl.PostBackDataHandler;
// Ignore controls that are not IPostBackDataHandler (see ASURT 13581)
if (consumer == null) {
// If it's a IPostBackEventHandler (which doesn't implement IPostBackDataHandler),
// register it (ASURT 39040)
if(ctrl.PostBackEventHandler != null)
RegisterRequiresRaiseEvent(ctrl.PostBackEventHandler);
continue;
}
bool changed;
if(consumer != null) {
changed = consumer.LoadPostData(postKey, _requestValueCollection);
if(changed)
_changedPostDataConsumers.Add(ctrl);
}
// ensure controls are only notified of postback once
if (_controlsRequiringPostBack != null)
_controlsRequiringPostBack.Remove(postKey);
}
}
}
// Keep track of the leftover for the post-load attempt
ArrayList leftOverControlsRequiringPostBack = null;
// process controls that explicitly registered to be notified of postback
if (_controlsRequiringPostBack != null) {
foreach (string controlID in _controlsRequiringPostBack) {
Control c = FindControl(controlID);
if (c != null) {
IPostBackDataHandler consumer = c.AdapterInternal as IPostBackDataHandler;
if(consumer == null) {
consumer = c as IPostBackDataHandler;
}
// Give a helpful error if the control is not a IPostBackDataHandler (ASURT 128532)
if (consumer == null) {
throw new HttpException(SR.GetString(SR.Postback_ctrl_not_found, controlID));
}
bool changed = consumer.LoadPostData(controlID, _requestValueCollection);
if (changed)
_changedPostDataConsumers.Add(c);
}
else {
if (fBeforeLoad) {
if (leftOverControlsRequiringPostBack == null)
leftOverControlsRequiringPostBack = new ArrayList();
leftOverControlsRequiringPostBack.Add(controlID);
}
}
}
_controlsRequiringPostBack = leftOverControlsRequiringPostBack;
}
}
/*
* This method will raise change events for those controls that indicated
* during PostProcessData that their data has changed.
*/
internal void RaiseChangedEvents() {
if (_changedPostDataConsumers != null) {
// fire change notifications for those controls that changed as a result of postback
for (int i=0; i < _changedPostDataConsumers.Count; i++) {
Control c = (Control)_changedPostDataConsumers[i];
IPostBackDataHandler changedPostDataConsumer;
if(c != null) {
changedPostDataConsumer = c.PostBackDataHandler;
}
else {
continue;
}
// Make sure the IPostBackDataHandler is still in the tree (ASURT 82495)
if (c != null && !c.IsDescendentOf(this))
continue;
if(c != null && c.PostBackDataHandler != null) {
changedPostDataConsumer.RaisePostDataChangedEvent();
}
}
}
}
private void RaisePostBackEvent(NameValueCollection postData) {
// first check if there is a register control needing the postback event
// if we don't have one of those, fall back to the hidden field
// Note: this must happen before we look at postData[postEventArgumentID] (ASURT 50106)
if (_registeredControlThatRequireRaiseEvent != null) {
RaisePostBackEvent(_registeredControlThatRequireRaiseEvent, null);
}
else {
string eventSource = postData[postEventSourceID];
bool hasEventSource = (!String.IsNullOrEmpty(eventSource));
// VSWhidbey 204824: We also need to check if the postback is submitted
// by an autopostback control in mobile browsers which cannot set
// event target in markup
if (hasEventSource || AutoPostBackControl != null) {
Control sourceControl = null;
if (hasEventSource) {
sourceControl = FindControl(eventSource);
}
if (sourceControl != null && sourceControl.PostBackEventHandler != null) {
string eventArgument = postData[postEventArgumentID];
RaisePostBackEvent((sourceControl.PostBackEventHandler), eventArgument);
}
}
else {
Validate();
}
}
}
// Overridable method that just calls RaisePostBackEvent on controls (ASURT 48154)
///
/// [To be supplied.]
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
protected virtual void RaisePostBackEvent(IPostBackEventHandler sourceControl, string eventArgument) {
sourceControl.RaisePostBackEvent(eventArgument);
}
//
///
/// Registers a control as requiring an event to be raised when it is processed
/// on the page.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
public virtual void RegisterRequiresRaiseEvent(IPostBackEventHandler control) {
_registeredControlThatRequireRaiseEvent = control;
}
// VSWhidbey 402530
// This property should be public. (DevDiv Bugs 161340)
public bool IsPostBackEventControlRegistered {
get {
return (_registeredControlThatRequireRaiseEvent != null);
}
}
///
/// Indicates whether page validation succeeded.
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public bool IsValid {
get {
if (!_validated)
throw new HttpException(SR.GetString(SR.IsValid_Cant_Be_Called));
if (_validators != null) {
ValidatorCollection vc = Validators;
int count = vc.Count;
for (int i = 0; i < count; i++) {
if (!vc[i].IsValid) {
return false;
}
}
}
return true;
}
}
///
/// Gets a collection of all validation controls contained on the requested page.
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public ValidatorCollection Validators {
get {
if (_validators == null) {
_validators = new ValidatorCollection();
}
return _validators;
}
}
///
/// Gets the PreviousPage of current Page, it could be either the original Page from
/// Server.Transfer or cross page posting.
///
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public Page PreviousPage {
get {
// check _previousPage first since _previousPagePath could be null in case of Server.Transfer
if (_previousPage == null) {
if (_previousPagePath != null) {
if (!Util.IsUserAllowedToPath(Context, _previousPagePath)) {
throw new InvalidOperationException(SR.GetString(SR.Previous_Page_Not_Authorized));
}
ITypedWebObjectFactory result =
(ITypedWebObjectFactory)BuildManager.GetVPathBuildResult(Context, _previousPagePath);
// Make sure it has the correct base type
if (typeof(Page).IsAssignableFrom(result.InstantiatedType)) {
_previousPage = (Page)result.CreateInstance();
_previousPage._isCrossPagePostBack = true;
Server.Execute(_previousPage, TextWriter.Null,
true /*preserveForm*/, false /*setPreviousPage*/);
}
}
}
return _previousPage;
}
}
/*
* Map virtual path (absolute or relative) to physical path
*/
///
/// Assigns a virtual path, either absolute or relative, to a physical path.
///
public string MapPath(string virtualPath) {
return _request.MapPath(VirtualPath.CreateAllowNull(virtualPath), TemplateControlVirtualDirectory,
true/*allowCrossAppMapping*/);
}
/*
* The following members should only be set by derived class through codegen.
*
*/
static char[] s_varySeparator = new char[] {';'};
///
/// [To be supplied.]
/// Note: this methods needs to be virtual because the Mobile control team
/// overrides it (ASURT 66157)
///
[EditorBrowsable(EditorBrowsableState.Never)]
protected virtual void InitOutputCache(int duration, string varyByHeader,
string varyByCustom, OutputCacheLocation location, string varyByParam) {
InitOutputCache(duration, null, varyByHeader, varyByCustom, location, varyByParam);
}
///
/// [To be supplied.]
/// Note: this methods needs to be virtual because the Mobile control team
/// overrides it (ASURT 66157)
///
[EditorBrowsable(EditorBrowsableState.Never)]
protected virtual void InitOutputCache(int duration, string varyByContentEncoding, string varyByHeader,
string varyByCustom, OutputCacheLocation location, string varyByParam) {
// DevDivBugs 18348: for a cross-page postback, use cache policy for
// original page and ignore cache policy for this page.
if (_isCrossPagePostBack) {
return;
}
OutputCacheParameters cacheSettings = new OutputCacheParameters();
cacheSettings.Duration = duration;
cacheSettings.VaryByContentEncoding = varyByContentEncoding;
cacheSettings.VaryByHeader = varyByHeader;
cacheSettings.VaryByCustom = varyByCustom;
cacheSettings.Location = location;
cacheSettings.VaryByParam = varyByParam;
InitOutputCache(cacheSettings);
}
///
/// [To be supplied.]
/// Note: this methods needs to be virtual because the Mobile control team
/// overrides it (ASURT 66157)
///
[EditorBrowsable(EditorBrowsableState.Never)]
protected internal virtual void InitOutputCache(OutputCacheParameters cacheSettings)
{
// DevDivBugs 18348: for a cross-page postback, use cache policy for
// original page and ignore cache policy for this page.
if (_isCrossPagePostBack) {
return;
}
OutputCacheSettingsSection outputCacheSettings;
OutputCacheProfile profile = null;
HttpCachePolicy cache = Response.Cache;
HttpCacheability cacheability;
OutputCacheLocation location = (OutputCacheLocation) (-1);
int duration = 0;
string varyByContentEncoding = null;
string varyByHeader = null;
string varyByCustom = null;
string varyByParam = null;
string sqlDependency = null;
string varyByControl = null;
bool noStore = false;
RuntimeConfig config;
config = RuntimeConfig.GetAppConfig();
OutputCacheSection outputCacheConfig = config.OutputCache;
// If output cache is not enabled, then don't do anything and return.
if (! outputCacheConfig.EnableOutputCache)
{
return;
}
if (cacheSettings.CacheProfile != null && cacheSettings.CacheProfile.Length != 0)
{
outputCacheSettings = config.OutputCacheSettings;
profile = (OutputCacheProfile) outputCacheSettings.OutputCacheProfiles[cacheSettings.CacheProfile];
if (profile == null) {
throw new HttpException(SR.GetString(SR.CacheProfile_Not_Found, cacheSettings.CacheProfile));
}
// If the profile disables it, then bail out
if (!profile.Enabled) {
return;
}
}
// If a cache profile was set above, the settings below will override the set defaults from config
// Pick up the settings from the configuration settings profile first
if (profile != null) {
duration = profile.Duration;
varyByContentEncoding = profile.VaryByContentEncoding;
varyByHeader = profile.VaryByHeader;
varyByCustom = profile.VaryByCustom;
varyByParam = profile.VaryByParam;
sqlDependency = profile.SqlDependency;
noStore = profile.NoStore;
varyByControl = profile.VaryByControl;
location = profile.Location;
if (String.IsNullOrEmpty(varyByContentEncoding)) {
varyByContentEncoding = null;
}
if (String.IsNullOrEmpty(varyByHeader)) {
varyByHeader = null;
}
if (String.IsNullOrEmpty(varyByCustom)) {
varyByCustom = null;
}
if (String.IsNullOrEmpty(varyByParam)) {
varyByParam = null;
}
if (String.IsNullOrEmpty(varyByControl)) {
varyByControl = null;
}
if (StringUtil.EqualsIgnoreCase(varyByParam, "none")) {
varyByParam = null;
}
if (StringUtil.EqualsIgnoreCase(varyByControl, "none")) {
varyByControl = null;
}
}
// Start overriding options from the directive
if (cacheSettings.IsParameterSet(OutputCacheParameter.Duration)) {
duration = cacheSettings.Duration;
}
if (cacheSettings.IsParameterSet(OutputCacheParameter.VaryByContentEncoding)) {
varyByContentEncoding = cacheSettings.VaryByContentEncoding;
}
if (cacheSettings.IsParameterSet(OutputCacheParameter.VaryByHeader)) {
varyByHeader = cacheSettings.VaryByHeader;
}
if (cacheSettings.IsParameterSet(OutputCacheParameter.VaryByCustom)) {
varyByCustom = cacheSettings.VaryByCustom;
}
if (cacheSettings.IsParameterSet(OutputCacheParameter.VaryByControl)) {
varyByControl = cacheSettings.VaryByControl;
}
if (cacheSettings.IsParameterSet(OutputCacheParameter.VaryByParam)) {
varyByParam = cacheSettings.VaryByParam;
}
if (cacheSettings.IsParameterSet(OutputCacheParameter.SqlDependency)) {
sqlDependency = cacheSettings.SqlDependency;
}
if (cacheSettings.IsParameterSet(OutputCacheParameter.NoStore)) {
noStore = cacheSettings.NoStore;
}
if (cacheSettings.IsParameterSet(OutputCacheParameter.Location)) {
location = cacheSettings.Location;
}
//
// Make some checks here and see if a configuration exception needs to be thrown:
// If location wasn't specified in the profile or in the directive, set a default one
if (location == (OutputCacheLocation) (-1)) {
location = OutputCacheLocation.Any;
}
// Skip all checks if Location is "None" or we are disabled
if ((location != OutputCacheLocation.None) &&
(profile == null || profile.Enabled)) {
// Check and see if duration is specified in the profile or in the directives
if ((profile == null || profile.Duration == -1) &&
(cacheSettings.IsParameterSet(OutputCacheParameter.Duration) == false)) {
throw new HttpException(SR.GetString(SR.Missing_output_cache_attr, "duration"));
}
// Check and see if varyByParam is specified in the profile or in the directives
if ((profile == null || ((profile.VaryByParam == null) && (profile.VaryByControl == null))) &&
(cacheSettings.IsParameterSet(OutputCacheParameter.VaryByParam) == false &&
cacheSettings.IsParameterSet(OutputCacheParameter.VaryByControl) == false)) {
throw new HttpException(SR.GetString(SR.Missing_output_cache_attr, "varyByParam"));
}
}
// Set the cache policy based upon these settings
if (noStore) {
Response.Cache.SetNoStore();
}
switch (location) {
case OutputCacheLocation.Any:
cacheability = HttpCacheability.Public;
break;
case OutputCacheLocation.Server:
cacheability = HttpCacheability.ServerAndNoCache;
break;
case OutputCacheLocation.ServerAndClient:
cacheability = HttpCacheability.ServerAndPrivate;
break;
case OutputCacheLocation.Client:
cacheability = HttpCacheability.Private;
break;
case OutputCacheLocation.Downstream:
cacheability = HttpCacheability.Public;
cache.SetNoServerCaching();
break;
case OutputCacheLocation.None:
cacheability = HttpCacheability.NoCache;
break;
default:
throw new ArgumentOutOfRangeException("cacheSettings", SR.GetString(SR.Invalid_cache_settings_location));
}
cache.SetCacheability(cacheability);
if (location != OutputCacheLocation.None) {
cache.SetExpires(Context.Timestamp.AddSeconds(duration));
cache.SetMaxAge(new TimeSpan(0, 0, duration));
cache.SetValidUntilExpires(true);
cache.SetLastModified(Context.Timestamp);
//
// A client cache'd item won't be cached on
// the server or a proxy, so it doesn't need
// a Varies header.
//
if (location != OutputCacheLocation.Client) {
if (varyByContentEncoding != null) {
string[] a = varyByContentEncoding.Split(s_varySeparator);
foreach (string s in a) {
cache.VaryByContentEncodings[s.Trim()] = true;
}
}
if (varyByHeader != null) {
string[] a = varyByHeader.Split(s_varySeparator);
foreach (string s in a) {
cache.VaryByHeaders[s.Trim()] = true;
}
}
if(PageAdapter != null) {
StringCollection adapterVaryByHeaders = PageAdapter.CacheVaryByHeaders;
if(adapterVaryByHeaders != null) {
foreach(string header in adapterVaryByHeaders) {
cache.VaryByHeaders[header] = true;
}
}
}
//
// Only items cached on the server need VaryByCustom and
// VaryByParam
//
if (location != OutputCacheLocation.Downstream) {
if (varyByCustom != null) {
cache.SetVaryByCustom(varyByCustom);
}
if (String.IsNullOrEmpty(varyByParam) &&
String.IsNullOrEmpty(varyByControl) &&
(PageAdapter == null || PageAdapter.CacheVaryByParams == null)) {
cache.VaryByParams.IgnoreParams = true;
}
else {
if (!String.IsNullOrEmpty(varyByParam)) {
string[] a = varyByParam.Split(s_varySeparator);
foreach (string s in a) {
cache.VaryByParams[s.Trim()] = true;
}
}
if (!String.IsNullOrEmpty(varyByControl)) {
string[] a = varyByControl.Split(s_varySeparator);
foreach (string s in a) {
cache.VaryByParams[s.Trim()] = true;
}
}
if(PageAdapter != null) {
IList adapterVaryByParams = PageAdapter.CacheVaryByParams;
if(adapterVaryByParams != null) {
foreach(string p in adapterVaryByParams) {
cache.VaryByParams[p] = true;
}
}
}
}
#if !FEATURE_PAL // FEATURE_PAL does not fully SQL dependencies
if (!String.IsNullOrEmpty(sqlDependency)) {
Response.AddCacheDependency(SqlCacheDependency.CreateOutputCacheDependency(sqlDependency));
}
#endif // !FEATURE_PAL
}
}
}
}
///
/// Is the SmartNavigation feature in use
///
[
Browsable(false),
Filterable(false)
]
[Obsolete("The recommended alternative is Page.SetFocus and Page.MaintainScrollPositionOnPostBack. http://go.microsoft.com/fwlink/?linkid=14202")]
public bool SmartNavigation {
get {
// If it's not supported or asked for, return false
if (_smartNavSupport == SmartNavigationSupport.NotDesiredOrSupported)
return false;
// Otherwise, determine what the browser supports
if (_smartNavSupport == SmartNavigationSupport.Desired) {
// *** We need to check the current context here since
// we check SmartNavigation when the context == null.
HttpContext currentContext = HttpContext.Current;
// Make sure that there is a current context
if (currentContext == null) {
// If there isn't one, assume SmartNavigation is off
return false;
}
// *** We CANNOT just check Request.Browser since Request will be null and throw an exception
HttpBrowserCapabilities browser = currentContext.Request.Browser;
// If it's not IE6+ on Windows, we don't support Smart Navigation
if (!String.Equals(browser.Browser, "ie", StringComparison.OrdinalIgnoreCase) || browser.MajorVersion < 6 ||
!browser.Win32) {
_smartNavSupport = SmartNavigationSupport.NotDesiredOrSupported;
}
else
_smartNavSupport = SmartNavigationSupport.IE6OrNewer;
}
return (_smartNavSupport != SmartNavigationSupport.NotDesiredOrSupported);
}
set {
if (value)
_smartNavSupport = SmartNavigationSupport.Desired;
else
_smartNavSupport = SmartNavigationSupport.NotDesiredOrSupported;
}
}
internal bool IsTransacted { get { return (_transactionMode != 0 /*TransactionOption.Disabled*/); } }
internal bool IsInAspCompatMode { get { return _aspCompatMode; } }
public bool IsAsync {
get { return _asyncMode; }
}
///
/// Occurs when the control is done handling postback data, and before PreRender.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
public event EventHandler LoadComplete {
add {
Events.AddHandler(EventLoadComplete, value);
}
remove {
Events.RemoveHandler(EventLoadComplete, value);
}
}
///
/// Raised after postback data is handled, and before PreRender.
///
protected virtual void OnLoadComplete(EventArgs e) {
EventHandler handler = (EventHandler)Events[EventLoadComplete];
if (handler != null) {
handler(this, e);
}
}
///
/// Raised after PreRender is complete
///
protected virtual void OnPreRenderComplete(EventArgs e) {
EventHandler handler = (EventHandler)Events[EventPreRenderComplete];
if (handler != null) {
handler(this, e);
}
}
///
/// Heres where all the 'final' page-level framework stuff happens.
/// Raise the PreRenderComplete event giving the user the first (and last)
/// chance to do certain things that affect page behavior, and
/// then perform the processing steps.
///
private void PerformPreRenderComplete() {
OnPreRenderComplete(EventArgs.Empty);
}
///
/// Occurs before controls' OnInit
///
public event EventHandler PreInit {
add {
Events.AddHandler(EventPreInit, value);
}
remove {
Events.RemoveHandler(EventPreInit, value);
}
}
///
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
public event EventHandler PreLoad {
add {
Events.AddHandler(EventPreLoad, value);
}
remove {
Events.RemoveHandler(EventPreLoad, value);
}
}
///
/// Occurs after all controls have completed PreRender
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
public event EventHandler PreRenderComplete {
add {
Events.AddHandler(EventPreRenderComplete, value);
}
remove {
Events.RemoveHandler(EventPreRenderComplete, value);
}
}
///
/// Override this method to apply stylesheet before building controls
///
protected override void FrameworkInitialize() {
base.FrameworkInitialize();
InitializeStyleSheet();
}
///
/// Override this method to initialize culture properties.
///
protected virtual void InitializeCulture() {
}
///
///
protected internal override void OnInit(EventArgs e) {
base.OnInit(e);
if (_theme != null) {
_theme.SetStyleSheet();
}
if (_styleSheet != null) {
_styleSheet.SetStyleSheet();
}
}
///
/// Raised before OnInit.
///
protected virtual void OnPreInit(EventArgs e) {
EventHandler handler = (EventHandler)Events[EventPreInit];
if (handler != null) {
handler(this, e);
}
}
///
/// Heres where all the 'early' page initialization happens.
/// Raise the PreInit event giving the user the first (and last)
/// chance to do certain things that affect page behavior, and
/// then perform the initialization steps.
///
/// For now this early initialization includes
/// theme loading.
///
private void PerformPreInit() {
OnPreInit(EventArgs.Empty);
InitializeThemes();
ApplyMasterPage();
_preInitWorkComplete = true;
}
///
/// Occurs when the page is done initializing, and before loading viewstate data.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
public event EventHandler InitComplete {
add {
Events.AddHandler(EventInitComplete, value);
}
remove {
Events.RemoveHandler(EventInitComplete, value);
}
}
///
/// Raised after page is initialized, and before loading viewstate.
///
protected virtual void OnInitComplete(EventArgs e) {
EventHandler handler = (EventHandler)Events[EventInitComplete];
if (handler != null) {
handler(this, e);
}
}
///
/// Raises the PreLoad event
///
protected virtual void OnPreLoad(EventArgs e) {
EventHandler handler = (EventHandler)Events[EventPreLoad];
if (handler != null) {
handler(this, e);
}
}
public void RegisterRequiresViewStateEncryption() {
if (ControlState >= ControlState.PreRendered) {
throw new InvalidOperationException(SR.GetString(SR.Too_late_for_RegisterRequiresViewStateEncryption));
}
_viewStateEncryptionRequested = true;
}
internal bool RequiresViewStateEncryptionInternal {
get {
return ViewStateEncryptionMode == ViewStateEncryptionMode.Always ||
_viewStateEncryptionRequested && ViewStateEncryptionMode == ViewStateEncryptionMode.Auto;
}
}
///
/// Occurs when the page has completed saving view state and control state.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
public event EventHandler SaveStateComplete {
add {
Events.AddHandler(EventSaveStateComplete, value);
}
remove {
Events.RemoveHandler(EventSaveStateComplete, value);
}
}
///
/// Raises the SaveStateComplete event
///
protected virtual void OnSaveStateComplete(EventArgs e) {
EventHandler handler = (EventHandler)Events[EventSaveStateComplete];
if (handler != null) {
handler(this, e);
}
}
///
Total controls: " + totalControls + "
");
_response.Write("With Occasional Fields: " + withOccasionalFields + "
");
_response.Write("With Rare Fields: " + withRareFields + "
");
}
#endif
internal void SetPreviousPage(Page previousPage) {
_previousPage = previousPage;
}
private void ProcessRequestMain() {
ProcessRequestMain(true /*includeStagesBeforeAsyncPoint*/, true /*includeStagesAfterAsyncPoint*/);
}
private void ProcessRequestMain(bool includeStagesBeforeAsyncPoint, bool includeStagesAfterAsyncPoint) {
try {
HttpContext con = Context;
string exportedWebPartID = null;
if (includeStagesBeforeAsyncPoint) {
// For ASPCOMPAT need to call OnPageStart for each Session object
#if !FEATURE_PAL // FEATURE_PAL does not enable COM
if (IsInAspCompatMode)
AspCompatApplicationStep.OnPageStartSessionObjects();
#else // !FEATURE_PAL
throw new NotImplementedException ("ROTORTODO");
#endif // !FEATURE_PAL
// Is it a GET, POST or initial request?
if(PageAdapter != null) {
_requestValueCollection = PageAdapter.DeterminePostBackMode();
}
else {
_requestValueCollection = DeterminePostBackMode();
}
string callbackControlId = String.Empty;
// Special-case Web Part Export so it executes in the same security context as the page itself (VSWhidbey 426574)
if (DetermineIsExportingWebPart()) {
if (!RuntimeConfig.GetAppConfig().WebParts.EnableExport) {
throw new InvalidOperationException(SR.GetString(SR.WebPartExportHandler_DisabledExportHandler));
}
exportedWebPartID = Request.QueryString["webPart"];
if (String.IsNullOrEmpty(exportedWebPartID)) {
throw new InvalidOperationException(SR.GetString(SR.WebPartExportHandler_InvalidArgument));
}
if (String.Equals(Request.QueryString["scope"], "shared", StringComparison.OrdinalIgnoreCase)) {
_pageFlags.Set(isExportingWebPartShared);
}
string queryString = Request.QueryString["query"];
if (queryString == null) {
queryString = String.Empty;
}
Request.QueryStringText = queryString;
con.Trace.IsEnabled = false;
}
if (_requestValueCollection != null) {
// Determine if viewstate was encrypted.
if (_requestValueCollection[ViewStateEncryptionID] != null) {
ContainsEncryptedViewState = true;
}
// Determine if this is a callback.
callbackControlId = _requestValueCollection[callbackID];
// Only accepting POST callbacks to reduce mail attack possibilities (VSWhidbey 417355)
if ((callbackControlId != null) && (_request.HttpVerb == HttpVerb.POST)) {
_isCallback = true;
}
else { // Otherwise, determine if this is cross-page posting(callsbacks can never be cross page posts)
if (!IsCrossPagePostBack) {
VirtualPath previousPagePath = null;
if (_requestValueCollection[previousPageID] != null) {
try {
previousPagePath = VirtualPath.CreateNonRelativeAllowNull(
DecryptString(_requestValueCollection[previousPageID]));
}
catch (System.Security.Cryptography.CryptographicException) {
// VSWhidbey 493209 If we fails to decrypt the previouspageid, still
// treat this as a cross page post, not a regular postback. Otherwise
// the viewstate cannot be decrypted properly. This will happen during
// cross page post between different applications.
_pageFlags[isCrossPagePostRequest] = true;
// do nothing, ignore CryptographicException.
}
// Process if the page is posted from cross-page that still exists and the target page is not same as source page.
if (previousPagePath != null &&
previousPagePath != Request.CurrentExecutionFilePathObject) {
_pageFlags[isCrossPagePostRequest] = true;
_previousPagePath = previousPagePath;
Debug.Assert(_previousPagePath != null);
}
}
}
}
}
// Load the scroll position data now that we have the request value collection
if (MaintainScrollPositionOnPostBack) {
LoadScrollPosition();
}
// we can't cache the value of IsEnabled because it could change during any phase.
if (con.TraceIsEnabled) Trace.Write("aspx.page", "Begin PreInit");
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_PRE_INIT_ENTER, _context.WorkerRequest);
PerformPreInit();
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_PRE_INIT_LEAVE, _context.WorkerRequest);
if (con.TraceIsEnabled) Trace.Write("aspx.page", "End PreInit");
if (con.TraceIsEnabled) Trace.Write("aspx.page", "Begin Init");
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_INIT_ENTER, _context.WorkerRequest);
InitRecursive(null);
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_INIT_LEAVE, _context.WorkerRequest);
if (con.TraceIsEnabled) Trace.Write("aspx.page", "End Init");
if (con.TraceIsEnabled) Trace.Write("aspx.page", "Begin InitComplete");
OnInitComplete(EventArgs.Empty);
if (con.TraceIsEnabled) Trace.Write("aspx.page", "End InitComplete");
if (IsPostBack) {
if (con.TraceIsEnabled) Trace.Write("aspx.page", "Begin LoadState");
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_LOAD_VIEWSTATE_ENTER, _context.WorkerRequest);
LoadAllState();
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_LOAD_VIEWSTATE_LEAVE, _context.WorkerRequest);
if (con.TraceIsEnabled) {
Trace.Write("aspx.page", "End LoadState");
Trace.Write("aspx.page", "Begin ProcessPostData");
}
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_LOAD_POSTDATA_ENTER, _context.WorkerRequest);
ProcessPostData(_requestValueCollection, true /* fBeforeLoad */);
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_LOAD_POSTDATA_LEAVE, _context.WorkerRequest);
if (con.TraceIsEnabled) Trace.Write("aspx.page", "End ProcessPostData");
}
if (con.TraceIsEnabled) Trace.Write("aspx.page", "Begin PreLoad");
OnPreLoad(EventArgs.Empty);
if (con.TraceIsEnabled) Trace.Write("aspx.page", "End PreLoad");
if (con.TraceIsEnabled) Trace.Write("aspx.page", "Begin Load");
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_LOAD_ENTER, _context.WorkerRequest);
LoadRecursive();
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_LOAD_LEAVE, _context.WorkerRequest);
if (con.TraceIsEnabled) Trace.Write("aspx.page", "End Load");
if (IsPostBack) {
// Try process the post data again (ASURT 29045)
if (con.TraceIsEnabled) Trace.Write("aspx.page", "Begin ProcessPostData Second Try");
ProcessPostData(_leftoverPostData, false /* !fBeforeLoad */);
if (con.TraceIsEnabled) {
Trace.Write("aspx.page", "End ProcessPostData Second Try");
Trace.Write("aspx.page", "Begin Raise ChangedEvents");
}
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_POST_DATA_CHANGED_ENTER, _context.WorkerRequest);
RaiseChangedEvents();
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_POST_DATA_CHANGED_LEAVE, _context.WorkerRequest);
if (con.TraceIsEnabled) {
Trace.Write("aspx.page", "End Raise ChangedEvents");
Trace.Write("aspx.page", "Begin Raise PostBackEvent");
}
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_RAISE_POSTBACK_ENTER, _context.WorkerRequest);
RaisePostBackEvent(_requestValueCollection);
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_RAISE_POSTBACK_LEAVE, _context.WorkerRequest);
if (con.TraceIsEnabled) Trace.Write("aspx.page", "End Raise PostBackEvent");
}
if (con.TraceIsEnabled) Trace.Write("aspx.page", "Begin LoadComplete");
OnLoadComplete(EventArgs.Empty);
if (con.TraceIsEnabled) Trace.Write("aspx.page", "End LoadComplete");
if (IsPostBack && IsCallback) {
PrepareCallback(callbackControlId);
}
else if (!IsCrossPagePostBack) {
if (con.TraceIsEnabled) Trace.Write("aspx.page", "Begin PreRender");
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_PRE_RENDER_ENTER, _context.WorkerRequest);
PreRenderRecursiveInternal();
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_PRE_RENDER_LEAVE, _context.WorkerRequest);
if (con.TraceIsEnabled) Trace.Write("aspx.page", "End PreRender");
}
}
/// Async Point here
if (_asyncInfo == null || _asyncInfo.CallerIsBlocking) {
// for non-async pages with registered async tasks - run the tasks here
// also when running async page via server.execute - run the tasks here
ExecuteRegisteredAsyncTasks();
}
// Make sure RawUrl gets validated.
_request.ValidateRawUrl();
if (includeStagesAfterAsyncPoint) {
if (IsCallback) {
RenderCallback();
return;
}
if (IsCrossPagePostBack) {
return;
}
if (con.TraceIsEnabled) Trace.Write("aspx.page", "Begin PreRenderComplete");
PerformPreRenderComplete();
if (con.TraceIsEnabled) Trace.Write("aspx.page", "End PreRenderComplete");
if (con.TraceIsEnabled) {
BuildPageProfileTree(EnableViewState);
Trace.Write("aspx.page", "Begin SaveState");
}
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_SAVE_VIEWSTATE_ENTER, _context.WorkerRequest);
SaveAllState();
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_SAVE_VIEWSTATE_LEAVE, _context.WorkerRequest);
if (con.TraceIsEnabled) {
Trace.Write("aspx.page", "End SaveState");
Trace.Write("aspx.page", "Begin SaveStateComplete");
}
OnSaveStateComplete(EventArgs.Empty);
if (con.TraceIsEnabled) {
Trace.Write("aspx.page", "End SaveStateComplete");
Trace.Write("aspx.page", "Begin Render");
}
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_RENDER_ENTER, _context.WorkerRequest);
// Special-case Web Part Export so it executes in the same security context as the page itself (VSWhidbey 426574)
if (exportedWebPartID != null) {
ExportWebPart(exportedWebPartID);
}
else {
RenderControl(CreateHtmlTextWriter(Response.Output));
}
if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Page)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_PAGE_RENDER_LEAVE, _context.WorkerRequest);
if (con.TraceIsEnabled) Trace.Write("aspx.page", "End Render");
CheckRemainingAsyncTasks(false);
}
}
catch (ThreadAbortException e) {
// Don't go into HandleError logic for ThreadAbortExceptions, since they
// are expected (e.g. when Response.Redirect() is called).
// VSWhidbey 500309: perf improvement. We can safely cancel the thread abort here
// to avoid re-throwing the exception if this is a redirect and we're not being executed
// under the context of a Server.Execute call (i.e. _context.Handler == this). Otherwise,
// re-throw so this can be handled lower in the stack (see HttpApplication.ExecuteStep).
// This perf optimization can only be applied if we are executing the entire page
// lifecycle within this method call (otherwise, in async pages) calling ResetAbort
// would only skip part of the lifecycle, not the entire page (as Response.End is supposed to)
HttpApplication.CancelModuleException cancelException = e.ExceptionState as HttpApplication.CancelModuleException;
if (includeStagesBeforeAsyncPoint && includeStagesAfterAsyncPoint && // executing entire page
_context.Handler == this && // not in server execute
_context.ApplicationInstance != null && // application must be non-null so we can complete the request
cancelException != null && !cancelException.Timeout) { // this is Response.End
_context.ApplicationInstance.CompleteRequest();
ThreadResetAbortWithAssert();
}
else {
CheckRemainingAsyncTasks(true);
throw;
}
}
catch (System.Configuration.ConfigurationException) {
throw;
}
catch (Exception e) {
// Increment all of the appropriate error counters
PerfCounters.IncrementCounter(AppPerfCounter.ERRORS_DURING_REQUEST);
PerfCounters.IncrementCounter(AppPerfCounter.ERRORS_TOTAL);
// If it hasn't been handled, rethrow it
if (!HandleError(e))
throw;
}
}
private void BuildPageProfileTree(bool enableViewState) {
if (!_profileTreeBuilt) {
_profileTreeBuilt = true;
BuildProfileTree("ROOT", enableViewState);
}
}
private void ExportWebPart(string exportedWebPartID) {
WebPart webPartToExport = null;
WebPartManager webPartManager = WebPartManager.GetCurrentWebPartManager(this);
if (webPartManager != null) {
webPartToExport = webPartManager.WebParts[exportedWebPartID];
}
if (webPartToExport == null || webPartToExport.IsClosed || webPartToExport is ProxyWebPart) {
// If there is no WebPartManager, or the web part is not on the page, or has been replaced
// by a ProxyWebPart, we should perform a Response.Redirect() back to the page with the
// Export query string removed. The Export query string has already been removed in
// ProcessRequestMain().
// (VSWhidbey 358464, 496050, 504819, 515472)
Response.Redirect(Request.RawUrl, false);
}
else {
// We'll be writing Xml to the response -> Prepare the response
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Expires = 0;
Response.ContentType = "application/mswebpart";
string title = webPartToExport.DisplayTitle;
if (String.IsNullOrEmpty(title)) {
title = SR.GetString(SR.Part_Untitled);
}
NonWordRegex nonWordRegex = new NonWordRegex();
Response.AddHeader("content-disposition", "attachment; filename=" +
nonWordRegex.Replace(title, "") +
".WebPart");
using (XmlTextWriter writer = new XmlTextWriter(Response.Output)) {
writer.Formatting = Formatting.Indented;
writer.WriteStartDocument();
// Export to the response stream
webPartManager.ExportWebPart(webPartToExport, writer);
writer.WriteEndDocument();
}
}
}
private void InitializeWriter(HtmlTextWriter writer) {
Html32TextWriter h32tw = writer as Html32TextWriter;
if (h32tw != null && Request.Browser != null) {
h32tw.ShouldPerformDivTableSubstitution = Request.Browser.Tables;
}
}
protected internal override void Render(HtmlTextWriter writer) {
InitializeWriter(writer);
base.Render(writer);
}
private void PrepareCallback(string callbackControlID) {
Response.Cache.SetNoStore();
try {
string param = _requestValueCollection[callbackParameterID];
_callbackControl = FindControl(callbackControlID) as ICallbackEventHandler;
if (_callbackControl != null) {
_callbackControl.RaiseCallbackEvent(param);
}
else {
throw new InvalidOperationException(SR.GetString(SR.Page_CallBackTargetInvalid, callbackControlID));
}
}
catch (Exception e) {
Response.Clear();
Response.Write('e');
if (Context.IsCustomErrorEnabled) {
Response.Write(SR.GetString(SR.Page_CallBackError));
}
else {
bool needsCallbackLoadScript = !String.IsNullOrEmpty(_requestValueCollection[callbackLoadScriptID]);
Response.Write(needsCallbackLoadScript ?
Util.QuoteJScriptString(HttpUtility.HtmlEncode(e.Message)) :
HttpUtility.HtmlEncode(e.Message));
}
}
return;
}
private void RenderCallback() {
bool needsCallbackLoadScript = !String.IsNullOrEmpty(_requestValueCollection[callbackLoadScriptID]);
try {
string index = null;
if (needsCallbackLoadScript) {
index = _requestValueCollection[callbackIndexID];
if (String.IsNullOrEmpty(index)) {
throw new HttpException(SR.GetString(SR.Page_CallBackInvalid));
}
// We validate the user string because we're injecting it into the response script.
// We don't need the integer, so we don't call Parse, we just need to check only expected
// characters are in the string (0 to 9)
for (int i = 0; i < index.Length; i++) {
if (!char.IsDigit(index, i)) {
throw new HttpException(SR.GetString(SR.Page_CallBackInvalid));
}
}
Response.Write("");
}
}
catch (Exception e) {
Response.Clear();
Response.Write('e');
if (Context.IsCustomErrorEnabled) {
Response.Write(SR.GetString(SR.Page_CallBackError));
}
else {
Response.Write(needsCallbackLoadScript ?
Util.QuoteJScriptString(HttpUtility.HtmlEncode(e.Message)) :
HttpUtility.HtmlEncode(e.Message));
}
}
return;
}
private bool RenderDivAroundHiddenInputs(HtmlTextWriter writer) {
return writer.RenderDivAroundHiddenInputs && (!EnableLegacyRendering || (RenderingCompatibility >= VersionUtil.Framework40));
}
internal void SetForm(HtmlForm form) {
_form = form;
}
internal void SetPostFormRenderDelegate(RenderMethod renderMethod) {
_postFormRenderDelegate = renderMethod;
}
public HtmlForm Form { get { return _form; } }
///
/// If called, ViewState will be persisted (see ASURT 73020).
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
public void RegisterViewStateHandler() {
_needToPersistViewState = true;
}
private void SaveAllState() {
// Don't do anything if no one cares about the view state (see ASURT 73020)
// Note: If _needToPersistViewState is false, control state should also be ignored.
if (!_needToPersistViewState)
return;
Pair statePair = new Pair();
// Control state is saved as a dictionary of
// 1. A list of controls that require postback (stored under the page id)
// 2. A dictionary of controls and their control state
IDictionary controlStates = null;
if (_registeredControlsRequiringControlState != null &&
_registeredControlsRequiringControlState.Count > 0) {
#if OBJECTSTATEFORMATTER
controlStates = new HybridDictionary(_registeredControlsRequiringControlState.Count + 1);
#else
controlStates = new Hashtable(_registeredControlsRequiringControlState.Count + 1);
#endif
foreach (Control ctl in _registeredControlsRequiringControlState) {
object controlState = ctl.SaveControlStateInternal();
// Do not allow null control states to be added, and do not allow a control's state to be
// added more than once.
if (controlStates[ctl.UniqueID] == null && controlState != null) {
controlStates.Add(ctl.UniqueID, controlState);
}
}
}
if (_registeredControlsThatRequirePostBack != null && _registeredControlsThatRequirePostBack.Count > 0) {
if (controlStates == null) {
#if OBJECTSTATEFORMATTER
controlStates = new HybridDictionary();
#else
controlStates = new Hashtable();
#endif
}
controlStates.Add(PageRegisteredControlsThatRequirePostBackKey, _registeredControlsThatRequirePostBack);
}
// Only persist control state if it is nonempty.
if (controlStates != null && controlStates.Count > 0) {
statePair.First = controlStates;
}
// The state is saved as an array of objects:
// 1. The hash code string
// 2. The state of the entire control hierarchy
ViewStateMode inheritedMode = ViewStateMode;
if (inheritedMode == ViewStateMode.Inherit) {
inheritedMode = ViewStateMode.Enabled;
}
Pair allSavedViewState = new Pair(GetTypeHashCode().ToString(NumberFormatInfo.InvariantInfo), SaveViewStateRecursive(inheritedMode));
if (Context.TraceIsEnabled) {
int viewStateSize = 0;
if (allSavedViewState.Second is Pair) {
viewStateSize = EstimateStateSize(((Pair)allSavedViewState.Second).First);
} else if (allSavedViewState.Second is Triplet) {
viewStateSize = EstimateStateSize(((Triplet)allSavedViewState.Second).First);
}
Trace.AddControlStateSize(UniqueID, viewStateSize, controlStates == null? 0 : EstimateStateSize(controlStates[UniqueID]));
}
statePair.Second = allSavedViewState;
SavePageStateToPersistenceMedium(statePair);
}
/*
* Override this method to persist view state to something other
* than hidden fields (
*/
///
/// Saves any view state information for the page. Override
/// this method if you want to save the page view state in anything other than a hidden field.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
protected internal virtual void SavePageStateToPersistenceMedium(object state) {
PageStatePersister persister = PageStatePersister;
if (state is Pair) {
Pair pair = (Pair)state;
persister.ControlState = pair.First;
persister.ViewState = pair.Second;
}
else /* triplet, legacy case, see VSWhidbey 155185 */ {
persister.ViewState = state;
}
persister.Save();
}
/*
* Set the intrinsics in this page object
*/
private void SetIntrinsics(HttpContext context) {
SetIntrinsics(context, false /* allowAsync */);
}
private void SetIntrinsics(HttpContext context, bool allowAsync) {
_context = context;
_request = context.Request;
_response = context.Response;
_application = context.Application;
_cache = context.Cache;
if (!allowAsync && _context != null && _context.ApplicationInstance != null) {
// disable attempts to launch async operations from pages not marked as async=true
// the first non-async page [on the server.execute stack] disables async operations
// it is re-enabled back in HttpApplication after done executing handler
_context.SyncContext.Disable();
}
// Synchronize the ClientTarget
if (!String.IsNullOrEmpty(_clientTarget)) {
_request.ClientTarget = _clientTarget;
}
// DCR 85444: Support per device type encoding
HttpCapabilitiesBase caps = _request.Browser;
if(caps != null) {
// Dev10 440476: Page.SetIntrinsics method has a bug causing throwing NullReferenceException
// in certain circumstances. This edge case was regressed by the VSWhidbey fix below.
// VSWhidbey 109162: Set content type at the very beginning so it can be
// overwritten within the user code of the page if needed.
_response.ContentType = caps.PreferredRenderingMime;
string preferredResponseEncoding = caps.PreferredResponseEncoding;
string preferredRequestEncoding = caps.PreferredRequestEncoding;
if (!String.IsNullOrEmpty(preferredResponseEncoding)) {
_response.ContentEncoding = Encoding.GetEncoding(preferredResponseEncoding);
}
if(!String.IsNullOrEmpty(preferredRequestEncoding)) {
_request.ContentEncoding = Encoding.GetEncoding(preferredRequestEncoding);
}
}
// Hook up any automatic handler we may find (e.g. Page_Load)
HookUpAutomaticHandlers();
}
///
/// Initializes the page's reference to the header control
///
internal void SetHeader(HtmlHead header) {
_header = header;
if (!String.IsNullOrEmpty(_titleToBeSet)) {
if (_header == null) {
throw new InvalidOperationException(SR.GetString(SR.Page_Title_Requires_Head));
}
else {
Title = _titleToBeSet;
_titleToBeSet = null;
}
}
if (!String.IsNullOrEmpty(_descriptionToBeSet)) {
if (_header == null) {
throw new InvalidOperationException(SR.GetString(SR.Page_Description_Requires_Head));
}
else {
MetaDescription = _descriptionToBeSet;
_descriptionToBeSet = null;
}
}
if (!String.IsNullOrEmpty(_keywordsToBeSet)) {
if (_header == null) {
throw new InvalidOperationException(SR.GetString(SR.Page_Description_Requires_Head));
}
else {
MetaKeywords = _keywordsToBeSet;
_keywordsToBeSet = null;
}
}
}
/// Override to unload the previousPage. The previousPage is unloaded after
/// the current page since current page could depend on previousPage.
internal override void UnloadRecursive(bool dispose) {
base.UnloadRecursive(dispose);
if (_previousPage != null && _previousPage.IsCrossPagePostBack) {
_previousPage.UnloadRecursive(dispose);
}
}
// ASP Compat helpers
#if !FEATURE_PAL // FEATURE_PAL does not enable COM
private AspCompatApplicationStep _aspCompatStep;
///
/// Instructs any validation controls included on the page to validate their
/// assigned information for the incoming page request.
///
public virtual void Validate() {
_validated = true;
if (_validators != null) {
for (int i = 0; i < Validators.Count; i++) {
Validators[i].Validate();
}
}
}
public virtual void Validate(string validationGroup) {
_validated = true;
if (_validators != null) {
ValidatorCollection validators = GetValidators(validationGroup);
// VSWhidbey 207823: When ValidationGroup is the default empty string,
// we should call the V1 method which could have been overridden so
// the overridden method on user page wouldn't be missed.
if (String.IsNullOrEmpty(validationGroup) &&
_validators.Count == validators.Count) {
Validate();
}
else {
for (int i = 0; i < validators.Count; i++) {
validators[i].Validate();
}
}
}
}
public ValidatorCollection GetValidators(string validationGroup) {
if (validationGroup == null) {
validationGroup = String.Empty;
}
ValidatorCollection validators = new ValidatorCollection();
if (_validators != null) {
for (int i = 0; i < Validators.Count; i++) {
BaseValidator baseValidator = Validators[i] as BaseValidator;
if (baseValidator != null) {
if (0 == String.Compare(baseValidator.ValidationGroup, validationGroup,
StringComparison.Ordinal)) {
validators.Add(baseValidator);
}
}
else if (validationGroup.Length == 0) {
validators.Add(Validators[i]);
}
}
}
return validators;
}
///
/// Throws an exception if it is runtime and we are not currently rendering the form runat=server tag.
/// Most controls that post back or that use client script require to be in this tag to function, so
/// they can call this during rendering. At design time this will do nothing.
/// Custom Control creators should call this during render if they render any sort of input tag, if they call
/// GetPostBackEventReference, or if they emit client script. A composite control does not need to make this
/// call.
/// This method should not be overridden unless creating an alternative page framework.
///
[EditorBrowsable(EditorBrowsableState.Advanced)]
public virtual void VerifyRenderingInServerForm(Control control) {
// We only want to make this check if we are definitely at runtime
if (Context == null || DesignMode) {
return;
}
if (control == null) {
throw new ArgumentNullException("control");
}
if (!_inOnFormRender && !IsCallback) {
throw new HttpException(SR.GetString(SR.ControlRenderedOutsideServerForm, control.ClientID, control.GetType().Name));
}
}
public PageAdapter PageAdapter {
get {
if(_pageAdapter == null) {
ResolveAdapter();
_pageAdapter = (PageAdapter)AdapterInternal;
}
return _pageAdapter;
}
}
//
private String _relativeFilePath;
internal String RelativeFilePath {
get {
if (_relativeFilePath == null) {
String s = Context.Request.CurrentExecutionFilePath;
String filePath = Context.Request.FilePath;
if(filePath.Equals(s)) {
int slash = s.LastIndexOf('/');
if (slash >= 0) {
s = s.Substring(slash+1);
}
_relativeFilePath = s;
}
else {
_relativeFilePath = Server.UrlDecode(UrlPath.MakeRelative(filePath, s));
}
}
return _relativeFilePath;
}
}
private bool _designModeChecked = false;
private bool _designMode = false;
internal bool GetDesignModeInternal() {
if(!_designModeChecked) {
_designMode = (Site != null) ? Site.DesignMode : false;
_designModeChecked = true;
}
return _designMode;
}
// For use by controls to store information with same lifetime as the request, for example, all radio buttons can
// use this to store the dictionary of radio button groups. The key should be a type. For the example, the value associated with
// the key System.Web.UI.WebControls.WmlRadioButtonAdapter is a NameValueCollection of RadioButtonGroups.
private IDictionary _items;
[
Browsable(false)
]
public IDictionary Items {
get {
if (_items == null) {
_items = new HybridDictionary();
}
return _items;
}
}
// Simplified data binding context stack
private Stack _dataBindingContext;
///
/// Creates a new context for databinding by pushing a new data item onto the databinding context stack.
///
internal void PushDataBindingContext(object dataItem) {
if (_dataBindingContext == null) {
_dataBindingContext = new Stack();
}
_dataBindingContext.Push(dataItem);
}
///
/// Exits a databinding context by removing the current data item from the databinding context stack.
///
internal void PopDataBindingContext() {
Debug.Assert(_dataBindingContext != null);
Debug.Assert(_dataBindingContext.Count > 0);
_dataBindingContext.Pop();
}
///
/// Gets the current data item from the top of the databinding context stack.
///
public object GetDataItem() {
if ((_dataBindingContext == null) || (_dataBindingContext.Count == 0)) {
throw new InvalidOperationException(SR.GetString(SR.Page_MissingDataBindingContext));
}
return _dataBindingContext.Peek();
}
internal static bool IsSystemPostField(string field) {
return s_systemPostFields.Contains(field);
}
internal IScriptManager ScriptManager {
get {
return (IScriptManager)Items[typeof(IScriptManager)];
}
}
// Needed to support Validators in AJAX 1.0 (Windows OS Bugs 2015831)
#region Atlas ScriptManager Partial Rendering support
internal bool IsPartialRenderingSupported {
get {
if (!_pageFlags[isPartialRenderingSupportedSet]) {
Type scriptManagerType = ScriptManagerType;
if (scriptManagerType != null) {
object scriptManager = Page.Items[scriptManagerType];
if (scriptManager != null) {
PropertyInfo supportsPartialRenderingProperty = scriptManagerType.GetProperty("SupportsPartialRendering");
if (supportsPartialRenderingProperty != null) {
object supportsPartialRenderingValue = supportsPartialRenderingProperty.GetValue(scriptManager, null);
_pageFlags[isPartialRenderingSupported] = (bool)supportsPartialRenderingValue;
}
}
}
_pageFlags[isPartialRenderingSupportedSet] = true;
}
return _pageFlags[isPartialRenderingSupported];
}
}
internal Type ScriptManagerType {
get {
if (_scriptManagerType == null) {
_scriptManagerType = BuildManager.GetType("System.Web.UI.ScriptManager", false);
}
return _scriptManagerType;
}
}
#endregion
#if DBG
// Temporary debugging method
///
///
public virtual void WalkViewState(object viewState, Control control, int indentLevel) {
if (viewState == null) {
return;
}
object [] viewStateArray = (object [])viewState;
object controlViewState = viewStateArray[0];
IDictionary childViewState = (IDictionary)viewStateArray[1];
string prefix = "";
for (int i=0; i < indentLevel; i++) {
prefix = prefix + " ";
}
if (controlViewState == null) {
System.Web.Util.Debug.Trace("tpeters", prefix + "ObjViewState: null");
}
else {
System.Web.Util.Debug.Trace("tpeters", prefix + "ObjViewState: " + controlViewState.ToString());
}
if (childViewState != null) {
for (IDictionaryEnumerator e = childViewState.GetEnumerator(); e.MoveNext();) {
int index = (int) e.Key;
object value = e.Value;
if (control == null) {
System.Web.Util.Debug.Trace("tpeters", prefix + "Control index: " + index.ToString());
WalkViewState(value, null, indentLevel + 1);
}
else {
string s = "None";
bool recurse = false;
if (control.HasControls()) {
if (index < control.Controls.Count) {
s = control.Controls[index].ToString();
recurse = true;
}
else {
s = "out of range";
}
}
System.Web.Util.Debug.Trace("tpeters", prefix + "Control index: " + index.ToString() + " control: " + s);
if (recurse) {
WalkViewState(value, control.Controls[index], indentLevel + 1);
}
}
}
}
}
#endif // DBG
}
// Used to define the list of valid values of the location attribute of the
// OutputCache directive.
///
/// [To be supplied.]
///
public enum OutputCacheLocation {
///
/// [To be supplied.]
///
Any,
///
/// [To be supplied.]
///
Client,
///
/// [To be supplied.]
///
Downstream,
///
/// [To be supplied.]
///
Server,
///
/// [To be supplied.]
///
None,
ServerAndClient
}
internal enum SmartNavigationSupport {
NotDesiredOrSupported=0, // The Page does not ask for SmartNav, or the browser doesn't support it
Desired, // The Page asks for SmartNavigation, but we have not checked browser support
IE6OrNewer // SmartNavigation supported by IE6 or newer browsers
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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-
EntityDescriptor.cs
-
DynamicResourceExtensionConverter.cs
-
DependencyPropertyDescriptor.cs
-
BufferAllocator.cs
-
IisTraceWebEventProvider.cs
-
ChangePasswordDesigner.cs
-
InputProviderSite.cs
-
RepeaterItemEventArgs.cs
-
EntityAdapter.cs
-
AutomationIdentifier.cs
-
Simplifier.cs
-
TypeUtil.cs
-
DynamicDataManager.cs
-
DeviceContext.cs
-
ApplicationException.cs
-
TemplatedWizardStep.cs
-
DbMetaDataCollectionNames.cs
-
TextStore.cs
-
SafeEventLogReadHandle.cs
-
NegatedConstant.cs
-
StaticContext.cs
-
BinHexEncoder.cs
-
SiteMembershipCondition.cs
-
StreamAsIStream.cs
-
PropertyToken.cs
-
Adorner.cs
-
LookupNode.cs
-
EntityModelBuildProvider.cs
-
TimeoutConverter.cs
-
EncoderParameters.cs
-
PointLight.cs
-
XmlEncodedRawTextWriter.cs
-
SortQueryOperator.cs
-
HtmlTextBoxAdapter.cs
-
SchemaImporter.cs
-
CategoryNameCollection.cs
-
CaseInsensitiveOrdinalStringComparer.cs
-
FillErrorEventArgs.cs
-
ReceiveErrorHandling.cs
-
DictionaryChange.cs
-
RuntimeResourceSet.cs
-
Aggregates.cs
-
DataGridViewLinkColumn.cs
-
DefaultExpressionVisitor.cs
-
CodeDOMUtility.cs
-
CommonObjectSecurity.cs
-
TryExpression.cs
-
FontFamilyIdentifier.cs
-
DataRecordObjectView.cs
-
HScrollProperties.cs
-
DataGridTablesFactory.cs
-
TextTreeRootTextBlock.cs
-
MulticastDelegate.cs
-
CodeDomConfigurationHandler.cs
-
BindStream.cs
-
ResXDataNode.cs
-
BuildManager.cs
-
PrimarySelectionGlyph.cs
-
SecurityResources.cs
-
StringValidatorAttribute.cs
-
SyndicationDeserializer.cs
-
SecurityHelper.cs
-
StorageFunctionMapping.cs
-
HttpConfigurationSystem.cs
-
AccessedThroughPropertyAttribute.cs
-
BinaryCommonClasses.cs
-
ObjectDataSourceDisposingEventArgs.cs
-
SecurityContext.cs
-
XmlNavigatorFilter.cs
-
Int32CollectionValueSerializer.cs
-
XmlArrayItemAttributes.cs
-
SingleObjectCollection.cs
-
ErasingStroke.cs
-
TcpAppDomainProtocolHandler.cs
-
MouseDevice.cs
-
SafePEFileHandle.cs
-
MetadataUtil.cs
-
SmiGettersStream.cs
-
ToolStripComboBox.cs
-
InkCanvas.cs
-
TextFormatterImp.cs
-
TemplateAction.cs
-
GridViewCancelEditEventArgs.cs
-
HasCopySemanticsAttribute.cs
-
DurationConverter.cs
-
InvokeWebService.cs
-
MarshalByValueComponent.cs
-
KnownTypes.cs
-
TraceContextEventArgs.cs
-
StaticTextPointer.cs
-
ConsumerConnectionPointCollection.cs
-
BitmapMetadataEnumerator.cs
-
BinaryMessageEncodingBindingElement.cs
-
DefaultPropertyAttribute.cs
-
PolicyLevel.cs
-
LogReservationCollection.cs
-
IChannel.cs
-
ClientRolePrincipal.cs
-
Validator.cs
-
SmtpFailedRecipientsException.cs