Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / WebControls / DetailsView.cs / 6 / DetailsView.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Collections;
using System.Collections.Specialized;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Drawing.Design;
using System.Globalization;
using System.IO;
using System.Reflection;
using System.Security.Permissions;
using System.Text;
using System.Web.UI.Adapters;
using System.Web.Util;
using System.Web.UI.WebControls.Adapters;
///
///
/// Displays a data record from a data source in a table layout. The data source
/// is any object that implements IEnumerable or IListSource, which includes ADO.NET data,
/// arrays, ArrayLists, DataSourceControl, etc.
///
///
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
[
Designer("System.Web.UI.Design.WebControls.DetailsViewDesigner, " + AssemblyRef.SystemDesign),
ControlValueProperty("SelectedValue"),
DefaultEvent("PageIndexChanging"),
ToolboxData("<{0}:DetailsView runat=\"server\" Width=\"125px\" Height=\"50px\">"),
SupportsEventValidation
]
public class DetailsView : CompositeDataBoundControl, IDataItemContainer, ICallbackContainer, ICallbackEventHandler, IPostBackEventHandler, IPostBackContainer {
private static readonly object EventItemCommand = new object();
private static readonly object EventItemCreated = new object();
private static readonly object EventItemDeleted = new object();
private static readonly object EventItemDeleting = new object();
private static readonly object EventItemInserting = new object();
private static readonly object EventItemInserted = new object();
private static readonly object EventItemUpdating = new object();
private static readonly object EventItemUpdated = new object();
private static readonly object EventModeChanged = new object();
private static readonly object EventModeChanging = new object();
private static readonly object EventPageIndexChanged = new object();
private static readonly object EventPageIndexChanging = new object();
private ITemplate _headerTemplate;
private ITemplate _footerTemplate;
private ITemplate _pagerTemplate;
private ITemplate _emptyDataTemplate;
private TableItemStyle _rowStyle;
private TableItemStyle _headerStyle;
private TableItemStyle _footerStyle;
private TableItemStyle _editRowStyle;
private TableItemStyle _alternatingRowStyle;
private TableItemStyle _commandRowStyle;
private TableItemStyle _insertRowStyle;
private TableItemStyle _emptyDataRowStyle;
private TableItemStyle _fieldHeaderStyle;
private DetailsViewRow _bottomPagerRow;
private DetailsViewRow _footerRow;
private DetailsViewRow _headerRow;
private DetailsViewRow _topPagerRow;
private TableItemStyle _pagerStyle;
private PagerSettings _pagerSettings;
private ArrayList _rowsArray;
private ArrayList _autoGenFieldProps;
private DataControlFieldCollection _fieldCollection;
private DetailsViewRowCollection _rowsCollection;
private int _pageCount;
private object _dataItem;
private int _dataItemIndex;
private OrderedDictionary _boundFieldValues;
private DataKey _dataKey;
private OrderedDictionary _keyTable;
private string[] _dataKeyNames;
private int _pageIndex;
private DetailsViewMode _defaultMode = DetailsViewMode.ReadOnly;
private DetailsViewMode _mode;
private bool _modeSet;
private bool _useServerPaging;
private string _modelValidationGroup;
private bool _renderClientScript;
private bool _renderClientScriptValid = false;
private IAutoFieldGenerator _rowsGenerator;
private IOrderedDictionary _deleteKeys;
private IOrderedDictionary _deleteValues;
private IOrderedDictionary _insertValues;
private IOrderedDictionary _updateKeys;
private IOrderedDictionary _updateOldValues;
private IOrderedDictionary _updateNewValues;
///
/// Gets or sets a value that indicates whether paging is allowed.
///
[
WebCategory("Paging"),
DefaultValue(false),
WebSysDescription(SR.DetailsView_AllowPaging)
]
public virtual bool AllowPaging {
get {
object o = ViewState["AllowPaging"];
if (o != null)
return(bool)o;
return false;
}
set {
bool oldValue = AllowPaging;
if (value != oldValue) {
ViewState["AllowPaging"] = value;
if (Initialized) {
RequiresDataBinding = true;
}
}
}
}
///
/// Indicates the style properties of alternating rows.
///
[
WebCategory("Styles"),
DefaultValue(null),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerProperty),
WebSysDescription(SR.DetailsView_AlternatingRowStyle)
]
public TableItemStyle AlternatingRowStyle {
get {
if (_alternatingRowStyle == null) {
_alternatingRowStyle = new TableItemStyle();
if (IsTrackingViewState)
((IStateManager)_alternatingRowStyle).TrackViewState();
}
return _alternatingRowStyle;
}
}
///
/// Gets or sets a value that indicates whether a button field for deleting will automatically
/// be created.
///
[
WebCategory("Behavior"),
DefaultValue(false),
WebSysDescription(SR.DetailsView_AutoGenerateDeleteButton)
]
public virtual bool AutoGenerateDeleteButton {
get {
object o = ViewState["AutoGenerateDeleteButton"];
if (o != null)
return(bool)o;
return false;
}
set {
bool oldValue = AutoGenerateDeleteButton;
if (value != oldValue) {
ViewState["AutoGenerateDeleteButton"] = value;
if (Initialized) {
RequiresDataBinding = true;
}
}
}
}
///
/// Gets or sets a value that indicates whether an edit field will automatically
/// be created.
///
[
WebCategory("Behavior"),
DefaultValue(false),
WebSysDescription(SR.DetailsView_AutoGenerateEditButton)
]
public virtual bool AutoGenerateEditButton {
get {
object o = ViewState["AutoGenerateEditButton"];
if (o != null)
return(bool)o;
return false;
}
set {
bool oldValue = AutoGenerateEditButton;
if (value != oldValue) {
ViewState["AutoGenerateEditButton"] = value;
if (Initialized) {
RequiresDataBinding = true;
}
}
}
}
///
/// Gets or sets a value that indicates whether an insert field will automatically
/// be created.
///
[
WebCategory("Behavior"),
DefaultValue(false),
WebSysDescription(SR.DetailsView_AutoGenerateInsertButton)
]
public virtual bool AutoGenerateInsertButton {
get {
object o = ViewState["AutoGenerateInsertButton"];
if (o != null)
return(bool)o;
return false;
}
set {
bool oldValue = AutoGenerateInsertButton;
if (value != oldValue) {
ViewState["AutoGenerateInsertButton"] = value;
if (Initialized) {
RequiresDataBinding = true;
}
}
}
}
///
/// Gets or sets a value that indicates whether fields will automatically
/// be created for each bound data field.
///
[
WebCategory("Behavior"),
DefaultValue(true),
WebSysDescription(SR.DetailsView_AutoGenerateRows)
]
public virtual bool AutoGenerateRows {
get {
object o = ViewState["AutoGenerateRows"];
if (o != null)
return(bool)o;
return true;
}
set {
bool oldValue = AutoGenerateRows;
if (value != oldValue) {
ViewState["AutoGenerateRows"] = value;
if (Initialized) {
RequiresDataBinding = true;
}
}
}
}
///
/// Gets or sets the URL of an image to display in the
/// background of the
///
[
WebCategory("Appearance"),
DefaultValue(""),
Editor("System.Web.UI.Design.ImageUrlEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)),
UrlProperty(),
WebSysDescription(SR.WebControl_BackImageUrl)
]
public virtual string BackImageUrl {
get {
if (ControlStyleCreated == false) {
return String.Empty;
}
return((TableStyle)ControlStyle).BackImageUrl;
}
set {
((TableStyle)ControlStyle).BackImageUrl = value;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
]
public virtual DetailsViewRow BottomPagerRow {
get {
if (_bottomPagerRow == null) {
EnsureChildControls();
}
return _bottomPagerRow;
}
}
private IOrderedDictionary BoundFieldValues {
get {
if (_boundFieldValues == null) {
int capacity = Fields.Count;
if (AutoGenerateRows) {
capacity += 10;
}
_boundFieldValues = new OrderedDictionary(capacity);
}
return _boundFieldValues;
}
}
[
Localizable(true),
DefaultValue(""),
WebCategory("Accessibility"),
WebSysDescription(SR.DataControls_Caption)
]
public virtual string Caption {
get {
string s = (string)ViewState["Caption"];
return (s != null) ? s : String.Empty;
}
set {
ViewState["Caption"] = value;
}
}
[
DefaultValue(TableCaptionAlign.NotSet),
WebCategory("Accessibility"),
WebSysDescription(SR.WebControl_CaptionAlign)
]
public virtual TableCaptionAlign CaptionAlign {
get {
object o = ViewState["CaptionAlign"];
return (o != null) ? (TableCaptionAlign)o : TableCaptionAlign.NotSet;
}
set {
if ((value < TableCaptionAlign.NotSet) ||
(value > TableCaptionAlign.Right)) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["CaptionAlign"] = value;
}
}
///
/// Indicates the amount of space between cells.
///
[
WebCategory("Layout"),
DefaultValue(-1),
WebSysDescription(SR.DetailsView_CellPadding)
]
public virtual int CellPadding {
get {
if (ControlStyleCreated == false) {
return -1;
}
return((TableStyle)ControlStyle).CellPadding;
}
set {
((TableStyle)ControlStyle).CellPadding = value;
}
}
///
/// Gets or sets the amount of space between the contents of
/// a cell and the cell's border.
///
[
WebCategory("Layout"),
DefaultValue(0),
WebSysDescription(SR.DetailsView_CellSpacing)
]
public virtual int CellSpacing {
get {
if (ControlStyleCreated == false) {
return 0;
}
return((TableStyle)ControlStyle).CellSpacing;
}
set {
((TableStyle)ControlStyle).CellSpacing = value;
}
}
///
/// Indicates the style properties of command rows.
///
[
WebCategory("Styles"),
DefaultValue(null),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerProperty),
WebSysDescription(SR.DetailsView_CommandRowStyle)
]
public TableItemStyle CommandRowStyle {
get {
if (_commandRowStyle == null) {
_commandRowStyle = new TableItemStyle();
if (IsTrackingViewState)
((IStateManager)_commandRowStyle).TrackViewState();
}
return _commandRowStyle;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public DetailsViewMode CurrentMode {
get {
return Mode;
}
}
// implement this publicly so DataBinder.Eval(container.DataItem, "x") still works.
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public virtual object DataItem {
get {
if (CurrentMode == DetailsViewMode.Insert) {
return null;
}
return _dataItem;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public int DataItemCount {
get {
return PageCount;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public virtual int DataItemIndex {
get {
if (CurrentMode == DetailsViewMode.Insert) {
return -1;
}
return _dataItemIndex;
}
}
[
DefaultValue(null),
Editor("System.Web.UI.Design.WebControls.DataFieldEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)),
TypeConverterAttribute(typeof(StringArrayConverter)),
WebCategory("Data"),
WebSysDescription(SR.DataControls_DataKeyNames)
]
public virtual string[] DataKeyNames {
get {
object o = _dataKeyNames;
if (o != null) {
return(string[])((string[])o).Clone();
}
return new string[0];
}
set {
if (!DataBoundControlHelper.CompareStringArrays(value, DataKeyNamesInternal)) {
if (value != null) {
_dataKeyNames = (string[])value.Clone();
}
else {
_dataKeyNames = null;
}
_keyTable = null;
if (Initialized) {
RequiresDataBinding = true;
}
}
}
}
// This version doesn't clone the array
private string[] DataKeyNamesInternal {
get {
object o = _dataKeyNames;
if (o != null) {
return (string[])o;
}
return new string[0];
}
}
///
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
WebSysDescription(SR.DetailsView_DataKey)
]
public virtual DataKey DataKey {
get {
if (_dataKey == null) {
_dataKey = new DataKey(KeyTable);
}
return _dataKey;
}
}
[
WebCategory("Behavior"),
DefaultValue(DetailsViewMode.ReadOnly),
WebSysDescription(SR.View_DefaultMode)
]
public virtual DetailsViewMode DefaultMode {
get {
return _defaultMode;
}
set {
if (value < DetailsViewMode.ReadOnly || value > DetailsViewMode.Insert) {
throw new ArgumentOutOfRangeException("value");
}
_defaultMode = value;
}
}
///
/// Indicates the style properties of each row when in edit mode.
///
[
WebCategory("Styles"),
DefaultValue(null),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerProperty),
WebSysDescription(SR.View_EditRowStyle)
]
public TableItemStyle EditRowStyle {
get {
if (_editRowStyle == null) {
_editRowStyle = new TableItemStyle();
if (IsTrackingViewState)
((IStateManager)_editRowStyle).TrackViewState();
}
return _editRowStyle;
}
}
///
/// Indicates the style properties of null rows.
///
[
WebCategory("Styles"),
DefaultValue(null),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerProperty),
WebSysDescription(SR.View_EmptyDataRowStyle)
]
public TableItemStyle EmptyDataRowStyle {
get {
if (_emptyDataRowStyle == null) {
_emptyDataRowStyle = new TableItemStyle();
if (IsTrackingViewState)
((IStateManager)_emptyDataRowStyle).TrackViewState();
}
return _emptyDataRowStyle;
}
}
///
/// Indicates the template to use when no records are returned from the datasource within the DetailsView.
///
[
Browsable(false),
DefaultValue(null),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateContainer(typeof(DetailsView)),
WebSysDescription(SR.View_EmptyDataTemplate)
]
public virtual ITemplate EmptyDataTemplate {
get {
return _emptyDataTemplate;
}
set {
_emptyDataTemplate = value;
}
}
///
/// The header text displayed if no EmptyDataTemplate is defined.
///
[
Localizable(true),
WebCategory("Appearance"),
DefaultValue(""),
WebSysDescription(SR.View_EmptyDataText),
]
public virtual String EmptyDataText {
get {
object o = ViewState["EmptyDataText"];
if (o != null) {
return (string)o;
}
return String.Empty;
}
set {
ViewState["EmptyDataText"] = value;
}
}
[
WebCategory("Behavior"),
DefaultValue(false),
WebSysDescription(SR.DataBoundControl_EnableModelValidation)
]
public virtual bool EnableModelValidation {
get {
object o = ViewState["EnableModelValidation"];
if (o != null) {
return (bool)o;
}
return false;
}
set {
ViewState["EnableModelValidation"] = value;
}
}
[
WebCategory("Behavior"),
DefaultValue(false),
WebSysDescription(SR.DetailsView_EnablePagingCallbacks)
]
public virtual bool EnablePagingCallbacks {
get {
object o = ViewState["EnablePagingCallbacks"];
if (o != null) {
return (bool)o;
}
return false;
}
set {
ViewState["EnablePagingCallbacks"] = value;
}
}
///
/// Indicates the style properties of the header column.
///
[
WebCategory("Styles"),
DefaultValue(null),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerProperty),
WebSysDescription(SR.DetailsView_FieldHeaderStyle)
]
public TableItemStyle FieldHeaderStyle {
get {
if (_fieldHeaderStyle == null) {
_fieldHeaderStyle = new TableItemStyle();
if (IsTrackingViewState)
((IStateManager)_fieldHeaderStyle).TrackViewState();
}
return _fieldHeaderStyle;
}
}
///
/// Gets a collection of
///
[
DefaultValue(null),
Editor("System.Web.UI.Design.WebControls.DataControlFieldTypeEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)),
MergableProperty(false),
PersistenceMode(PersistenceMode.InnerProperty),
WebCategory("Default"),
WebSysDescription(SR.DetailsView_Fields)
]
public virtual DataControlFieldCollection Fields {
get {
if (_fieldCollection == null) {
_fieldCollection = new DataControlFieldCollection();
_fieldCollection.FieldsChanged += new EventHandler(OnFieldsChanged);
if (IsTrackingViewState)
((IStateManager)_fieldCollection).TrackViewState();
}
return _fieldCollection;
}
}
private int FirstDisplayedPageIndex {
get {
object o = ViewState["FirstDisplayedPageIndex"];
if (o != null) {
return (int)o;
}
return -1;
}
set {
ViewState["FirstDisplayedPageIndex"] = value;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
]
public virtual DetailsViewRow FooterRow {
get {
if (_footerRow == null) {
EnsureChildControls();
}
return _footerRow;
}
}
///
/// Indicates the style properties of the footer row.
///
[
WebCategory("Styles"),
DefaultValue(null),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerProperty),
WebSysDescription(SR.DetailsView_FooterStyle)
]
public TableItemStyle FooterStyle {
get {
if (_footerStyle == null) {
_footerStyle = new TableItemStyle();
if (IsTrackingViewState)
((IStateManager)_footerStyle).TrackViewState();
}
return _footerStyle;
}
}
///
/// Indicates the template to use for a footer item within the DetailsView.
///
[
Browsable(false),
DefaultValue(null),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateContainer(typeof(DetailsView)),
WebSysDescription(SR.DetailsView_FooterTemplate)
]
public virtual ITemplate FooterTemplate {
get {
return _footerTemplate;
}
set {
_footerTemplate = value;
}
}
///
/// The header text displayed if no FooterTemplate is defined.
///
[
Localizable(true),
WebCategory("Appearance"),
DefaultValue(""),
WebSysDescription(SR.View_FooterText),
]
public virtual String FooterText {
get {
object o = ViewState["FooterText"];
if (o != null) {
return (string)o;
}
return String.Empty;
}
set {
ViewState["FooterText"] = value;
}
}
///
/// Gets or sets a value that specifies the grid line style.
///
[
WebCategory("Appearance"),
DefaultValue(GridLines.Both),
WebSysDescription(SR.DataControls_GridLines)
]
public virtual GridLines GridLines {
get {
if (ControlStyleCreated == false) {
return GridLines.Both;
}
return((TableStyle)ControlStyle).GridLines;
}
set {
((TableStyle)ControlStyle).GridLines = value;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
]
public virtual DetailsViewRow HeaderRow {
get {
if (_headerRow == null) {
EnsureChildControls();
}
return _headerRow;
}
}
///
/// Indicates the style properties of the header row.
///
[
WebCategory("Styles"),
DefaultValue(null),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerProperty),
WebSysDescription(SR.WebControl_HeaderStyle)
]
public TableItemStyle HeaderStyle {
get {
if (_headerStyle == null) {
_headerStyle = new TableItemStyle();
if (IsTrackingViewState)
((IStateManager)_headerStyle).TrackViewState();
}
return _headerStyle;
}
}
///
/// Indicates the template to use for a header item within the DetailsView.
///
[
Browsable(false),
DefaultValue(null),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateContainer(typeof(DetailsView)),
WebSysDescription(SR.WebControl_HeaderTemplate)
]
public virtual ITemplate HeaderTemplate {
get {
return _headerTemplate;
}
set {
_headerTemplate = value;
}
}
///
/// The header text displayed if no HeaderTemplate is defined.
///
[
Localizable(true),
WebCategory("Appearance"),
DefaultValue(""),
WebSysDescription(SR.View_HeaderText),
]
public virtual String HeaderText {
get {
object o = ViewState["HeaderText"];
if (o != null) {
return (string)o;
}
return String.Empty;
}
set {
ViewState["HeaderText"] = value;
}
}
///
/// Gets or sets a value that specifies the alignment of a rows with respect
/// surrounding text.
///
[
Category("Layout"),
DefaultValue(HorizontalAlign.NotSet),
WebSysDescription(SR.WebControl_HorizontalAlign)
]
public virtual HorizontalAlign HorizontalAlign {
get {
if (ControlStyleCreated == false) {
return HorizontalAlign.NotSet;
}
return((TableStyle)ControlStyle).HorizontalAlign;
}
set {
((TableStyle)ControlStyle).HorizontalAlign = value;
}
}
///
/// Indicates the style properties of each row when in insert mode.
///
[
WebCategory("Styles"),
DefaultValue(null),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerProperty),
WebSysDescription(SR.View_InsertRowStyle)
]
public TableItemStyle InsertRowStyle {
get {
if (_insertRowStyle == null) {
_insertRowStyle = new TableItemStyle();
if (IsTrackingViewState)
((IStateManager)_insertRowStyle).TrackViewState();
}
return _insertRowStyle;
}
}
private OrderedDictionary KeyTable {
get {
if (_keyTable == null) {
_keyTable = new OrderedDictionary(DataKeyNamesInternal.Length);
}
return _keyTable;
}
}
private DetailsViewMode Mode {
get {
// if the mode wasn't explicitly set by LoadControlState or by the user, the mode is the DefaultMode.
if (!_modeSet || DesignMode) {
_mode = DefaultMode;
_modeSet = true;
}
return _mode;
}
set {
if (value < DetailsViewMode.ReadOnly || value > DetailsViewMode.Insert) {
throw new ArgumentOutOfRangeException("value");
}
_modeSet = true;
if (_mode != value) {
_mode = value;
if (Initialized) {
RequiresDataBinding = true;
}
}
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public virtual int PageCount {
get {
return _pageCount;
}
}
///
/// Gets or sets the index of the currently displayed record.
/// This property echos the public one so that we can set PageIndex to -1
/// internally when we switch to insert mode, but users should never do that.
///
private int PageIndexInternal {
get {
return _pageIndex;
}
set {
int currentPageIndex = PageIndexInternal;
if (value != currentPageIndex) {
_pageIndex = value;
if (Initialized) {
RequiresDataBinding = true;
}
}
}
}
///
/// Gets or sets the index of the currently displayed record.
///
[
Bindable(true),
DefaultValue(0),
WebCategory("Data"),
WebSysDescription(SR.DetailsView_PageIndex)
]
public virtual int PageIndex {
get {
// if we're in design mode, we don't want a change to the mode to set the PageIndex to -1.
if (Mode == DetailsViewMode.Insert && !DesignMode) {
return -1;
}
return PageIndexInternal;
}
set {
// since we don't know at property set time how many DataItems we'll have,
// don't throw if we're above PageCount
if (value < -1) {
throw new ArgumentOutOfRangeException("value");
}
if (value >= 0) {
PageIndexInternal = value;
}
}
}
///
/// Gets the settings of the pager buttons for the
///
///
[
WebCategory("Paging"),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerProperty),
WebSysDescription(SR.DetailsView_PagerSettings)
]
public virtual PagerSettings PagerSettings {
get {
if (_pagerSettings == null) {
_pagerSettings = new PagerSettings();
if (IsTrackingViewState) {
((IStateManager)_pagerSettings).TrackViewState();
}
_pagerSettings.PropertyChanged += new EventHandler(OnPagerPropertyChanged);
}
return _pagerSettings;
}
}
///
/// Gets the style properties of the pager rows for the
///
///
[
WebCategory("Styles"),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerProperty),
WebSysDescription(SR.WebControl_PagerStyle)
]
public TableItemStyle PagerStyle {
get {
if (_pagerStyle == null) {
_pagerStyle = new TableItemStyle();
if (IsTrackingViewState)
((IStateManager)_pagerStyle).TrackViewState();
}
return _pagerStyle;
}
}
///
/// Indicates the template to use for a pager item within the DetailsView.
///
[
Browsable(false),
DefaultValue(null),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateContainer(typeof(DetailsView)),
WebSysDescription(SR.View_PagerTemplate)
]
public virtual ITemplate PagerTemplate {
get {
return _pagerTemplate;
}
set {
_pagerTemplate = value;
}
}
///
/// Gets a collection of
///
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
WebSysDescription(SR.DetailsView_Rows)
]
public virtual DetailsViewRowCollection Rows {
get {
if (_rowsCollection == null) {
if (_rowsArray == null) {
EnsureChildControls();
}
if (_rowsArray == null) {
_rowsArray = new ArrayList();
}
_rowsCollection = new DetailsViewRowCollection(_rowsArray);
}
return _rowsCollection;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public IAutoFieldGenerator RowsGenerator {
get {
return _rowsGenerator;
}
set {
_rowsGenerator = value;
}
}
///
/// Indicates the style properties of each row.
///
[
WebCategory("Styles"),
DefaultValue(null),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerProperty),
WebSysDescription(SR.View_RowStyle)
]
public TableItemStyle RowStyle {
get {
if (_rowStyle == null) {
_rowStyle = new TableItemStyle();
if (IsTrackingViewState)
((IStateManager)_rowStyle).TrackViewState();
}
return _rowStyle;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public object SelectedValue {
get {
return DataKey.Value;
}
}
protected override HtmlTextWriterTag TagKey {
get {
return EnablePagingCallbacks ?
HtmlTextWriterTag.Div : HtmlTextWriterTag.Table;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
]
public virtual DetailsViewRow TopPagerRow {
get {
if (_topPagerRow == null) {
EnsureChildControls();
}
return _topPagerRow;
}
}
///
/// Occurs when a command is issued from the DetailsView.
///
[
WebCategory("Action"),
WebSysDescription(SR.DetailsView_OnItemCommand)
]
public event DetailsViewCommandEventHandler ItemCommand {
add {
Events.AddHandler(EventItemCommand, value);
}
remove {
Events.RemoveHandler(EventItemCommand, value);
}
}
///
/// Occurs when a row is created.
///
[
WebCategory("Behavior"),
WebSysDescription(SR.DetailsView_OnItemCreated)
]
public event EventHandler ItemCreated {
add {
Events.AddHandler(EventItemCreated, value);
}
remove {
Events.RemoveHandler(EventItemCreated, value);
}
}
///
/// Occurs when the DetailsView item has been deleted.
///
[
WebCategory("Action"),
WebSysDescription(SR.DataControls_OnItemDeleted)
]
public event DetailsViewDeletedEventHandler ItemDeleted {
add {
Events.AddHandler(EventItemDeleted, value);
}
remove {
Events.RemoveHandler(EventItemDeleted, value);
}
}
///
/// Occurs when the DetailsView item is being deleted.
///
[
WebCategory("Action"),
WebSysDescription(SR.DataControls_OnItemDeleting)
]
public event DetailsViewDeleteEventHandler ItemDeleting {
add {
Events.AddHandler(EventItemDeleting, value);
}
remove {
Events.RemoveHandler(EventItemDeleting, value);
}
}
///
/// Occurs when the DetailsView item has been inserted.
///
[
WebCategory("Action"),
WebSysDescription(SR.DataControls_OnItemInserted)
]
public event DetailsViewInsertedEventHandler ItemInserted {
add {
Events.AddHandler(EventItemInserted, value);
}
remove {
Events.RemoveHandler(EventItemInserted, value);
}
}
///
/// Occurs when the DetailsView item is being inserted.
///
[
WebCategory("Action"),
WebSysDescription(SR.DataControls_OnItemInserting)
]
public event DetailsViewInsertEventHandler ItemInserting {
add {
Events.AddHandler(EventItemInserting, value);
}
remove {
Events.RemoveHandler(EventItemInserting, value);
}
}
///
/// Occurs when the DetailsView item has been updated.
///
[
WebCategory("Action"),
WebSysDescription(SR.DataControls_OnItemUpdated)
]
public event DetailsViewUpdatedEventHandler ItemUpdated {
add {
Events.AddHandler(EventItemUpdated, value);
}
remove {
Events.RemoveHandler(EventItemUpdated, value);
}
}
///
/// Occurs when the DetailsView item is being updated.
///
[
WebCategory("Action"),
WebSysDescription(SR.DataControls_OnItemUpdating)
]
public event DetailsViewUpdateEventHandler ItemUpdating {
add {
Events.AddHandler(EventItemUpdating, value);
}
remove {
Events.RemoveHandler(EventItemUpdating, value);
}
}
///
/// Occurs when the ViewMode has changed.
///
[
WebCategory("Action"),
WebSysDescription(SR.DetailsView_OnModeChanged)
]
public event EventHandler ModeChanged {
add {
Events.AddHandler(EventModeChanged, value);
}
remove {
Events.RemoveHandler(EventModeChanged, value);
}
}
///
/// Occurs when the ViewMode is changing.
///
[
WebCategory("Action"),
WebSysDescription(SR.DetailsView_OnModeChanging)
]
public event DetailsViewModeEventHandler ModeChanging {
add {
Events.AddHandler(EventModeChanging, value);
}
remove {
Events.RemoveHandler(EventModeChanging, value);
}
}
///
/// Occurs when the DetailsView PageIndex has been changed.
///
[
WebCategory("Action"),
WebSysDescription(SR.DetailsView_OnPageIndexChanged)
]
public event EventHandler PageIndexChanged {
add {
Events.AddHandler(EventPageIndexChanged, value);
}
remove {
Events.RemoveHandler(EventPageIndexChanged, value);
}
}
///
/// Occurs when the DetailsView PageIndex is changing.
///
[
WebCategory("Action"),
WebSysDescription(SR.DetailsView_OnPageIndexChanging)
]
public event DetailsViewPageEventHandler PageIndexChanging {
add {
Events.AddHandler(EventPageIndexChanging, value);
}
remove {
Events.RemoveHandler(EventPageIndexChanging, value);
}
}
///
/// Builds the callback argument used in DataControlLinkButtons.
///
private string BuildCallbackArgument(int pageIndex) {
return "\"" + Convert.ToString(pageIndex, CultureInfo.InvariantCulture) + "|\"";
}
public void ChangeMode(DetailsViewMode newMode) {
Mode = newMode;
}
///
/// Create a single autogenerated row. This function can be overridden to create a different AutoGeneratedField.
///
protected virtual AutoGeneratedField CreateAutoGeneratedRow(AutoGeneratedFieldProperties fieldProperties) {
AutoGeneratedField field = new AutoGeneratedField(fieldProperties.DataField);
string name = fieldProperties.Name;
((IStateManager)field).TrackViewState();
field.HeaderText = name;
field.SortExpression = name;
field.ReadOnly = fieldProperties.IsReadOnly;
field.DataType = fieldProperties.Type;
return field;
}
///
/// Creates the set of AutoGenerated rows. This function cannot be overridden because then if someone
/// overrides it to add another type of DataControlField to the control, we have to manage the states of those
/// fields along with their types.
///
protected virtual ICollection CreateAutoGeneratedRows(object dataItem) {
if (dataItem == null) {
//
return null;
}
ArrayList generatedFields = new ArrayList();
PropertyDescriptorCollection propDescs = null;
bool throwException = true;
Type dataItemType = null;
_autoGenFieldProps = new ArrayList();
if (dataItem != null)
dataItemType = dataItem.GetType();
if ((dataItem != null) && (dataItem is ICustomTypeDescriptor)) {
// Get the custom properties of the object
propDescs = TypeDescriptor.GetProperties(dataItem);
} else if (dataItemType != null) {
// directly bindable types: strings, ints etc. get treated specially, since we
// don't care about their properties, but rather we care about them directly
if (IsBindableType(dataItemType)) {
AutoGeneratedFieldProperties fieldProps = new AutoGeneratedFieldProperties();
((IStateManager)fieldProps).TrackViewState();
fieldProps.Name = "Item";
fieldProps.DataField = AutoGeneratedField.ThisExpression;
fieldProps.Type = dataItemType;
AutoGeneratedField field = CreateAutoGeneratedRow(fieldProps);
if (field != null) {
generatedFields.Add(field);
_autoGenFieldProps.Add(fieldProps);
}
} else {
// complex type... we get its properties
propDescs = TypeDescriptor.GetProperties(dataItemType);
}
}
if ((propDescs != null) && (propDescs.Count != 0)) {
string[] dataKeyNames = DataKeyNamesInternal;
int keyNamesLength = dataKeyNames.Length;
string [] dataKeyNamesCaseInsensitive = new string[keyNamesLength];
for (int i = 0; i < keyNamesLength; i++) {
dataKeyNamesCaseInsensitive[i] = dataKeyNames[i].ToLowerInvariant();
}
foreach (PropertyDescriptor pd in propDescs) {
Type propertyType = pd.PropertyType;
if (IsBindableType(propertyType)) {
string name = pd.Name;
bool isKey = ((IList)dataKeyNamesCaseInsensitive).Contains(name.ToLowerInvariant());
AutoGeneratedFieldProperties fieldProps = new AutoGeneratedFieldProperties();
((IStateManager)fieldProps).TrackViewState();
fieldProps.Name = name;
fieldProps.IsReadOnly = isKey;
fieldProps.Type = propertyType;
fieldProps.DataField = name;
AutoGeneratedField field = CreateAutoGeneratedRow(fieldProps);
if (field != null) {
generatedFields.Add(field);
_autoGenFieldProps.Add(fieldProps);
}
}
}
}
if ((generatedFields.Count == 0) && throwException) {
// this handles the case where we got back something that either had no
// properties, or all properties were not bindable.
throw new HttpException(SR.GetString(SR.DetailsView_NoAutoGenFields, ID));
}
return generatedFields;
}
///
/// Creates the control hierarchy that is used to render the DetailsView.
/// This is called whenever a control hierarchy is needed and the
/// ChildControlsCreated property is false.
/// The implementation assumes that all the children in the controls
/// collection have already been cleared.
///
protected override int CreateChildControls(IEnumerable dataSource, bool dataBinding) {
PagedDataSource pagedDataSource = null;
int itemIndex = PageIndex;
bool allowPaging = AllowPaging;
int itemCount = 0;
DetailsViewMode mode = Mode;
// if we're in design mode, PageIndex doesn't return -1
if (DesignMode && mode == DetailsViewMode.Insert) {
itemIndex = -1;
}
if (dataBinding) {
DataSourceView view = GetData();
DataSourceSelectArguments arguments = SelectArguments;
if (view == null) {
throw new HttpException(SR.GetString(SR.DataBoundControl_NullView, ID));
}
if (mode != DetailsViewMode.Insert) {
if (allowPaging && !view.CanPage) {
if (dataSource != null && !(dataSource is ICollection)) {
arguments.StartRowIndex = itemIndex;
arguments.MaximumRows = 1;
// This should throw an exception saying the data source can't page.
// We do this because the data source can provide a better error message than we can.
view.Select(arguments, SelectCallback);
}
}
if (_useServerPaging) {
if (view.CanRetrieveTotalRowCount) {
pagedDataSource = CreateServerPagedDataSource(arguments.TotalRowCount);
}
else {
ICollection dataSourceCollection = dataSource as ICollection;
if (dataSourceCollection == null) {
throw new HttpException(SR.GetString(SR.DataBoundControl_NeedICollectionOrTotalRowCount, GetType().Name));
}
pagedDataSource = CreateServerPagedDataSource(checked(PageIndex + dataSourceCollection.Count));
}
}
else {
pagedDataSource = CreatePagedDataSource();
}
}
}
else {
pagedDataSource = CreatePagedDataSource();
}
if (mode != DetailsViewMode.Insert) {
pagedDataSource.DataSource = dataSource;
}
IEnumerator dataSourceEnumerator = null;
OrderedDictionary keyTable = KeyTable;
_rowsArray = new ArrayList();
_rowsCollection = null;
if (dataBinding == false) {
dataSourceEnumerator = dataSource.GetEnumerator();
ICollection collection = dataSource as ICollection;
if (collection == null) {
throw new HttpException(SR.GetString(SR.DataControls_DataSourceMustBeCollectionWhenNotDataBinding));
}
itemCount = collection.Count;
} else {
keyTable.Clear();
if (dataSource != null) {
if (mode != DetailsViewMode.Insert) {
ICollection collection = dataSource as ICollection;
if ((collection == null) && (pagedDataSource.IsPagingEnabled && !pagedDataSource.IsServerPagingEnabled)) {
throw new HttpException(SR.GetString(SR.DetailsView_DataSourceMustBeCollection, ID));
}
if (pagedDataSource.IsPagingEnabled) {
itemCount = pagedDataSource.DataSourceCount;
}
else if (collection != null) {
itemCount = collection.Count;
}
}
dataSourceEnumerator = dataSource.GetEnumerator();
}
}
Table table = CreateTable();
TableRowCollection rows = table.Rows;
bool moveNextSucceeded = false;
object lastItem = null;
Controls.Add(table);
if (dataSourceEnumerator != null) {
moveNextSucceeded = dataSourceEnumerator.MoveNext(); // goto the first item
}
// if there are no items, only add the tablerow if there's a null template or null text
if (!moveNextSucceeded && mode != DetailsViewMode.Insert) {
// if we're in insert mode and we're not autogenerating rows, render the rows in insert mode
if (itemIndex >= 0 || AutoGenerateRows) {
if (EmptyDataText.Length > 0 || _emptyDataTemplate != null) {
_rowsArray.Add(CreateRow(0, DataControlRowType.EmptyDataRow, DataControlRowState.Normal, null, rows, null));
}
itemCount = 0;
}
}
else {
int currentItemIndex = 0;
if (!_useServerPaging) {
// skip over the first records that are before the page we're showing
for (; currentItemIndex < itemIndex; currentItemIndex++) {
lastItem = dataSourceEnumerator.Current;
moveNextSucceeded = dataSourceEnumerator.MoveNext();
if (!moveNextSucceeded) {
_pageIndex = currentItemIndex;
pagedDataSource.CurrentPageIndex = currentItemIndex;
itemIndex = currentItemIndex;
break; // never throw if the PageIndex is out of range: just fix up the current page and goto the last item.
}
}
}
if (moveNextSucceeded) {
_dataItem = dataSourceEnumerator.Current;
}
else {
_dataItem = lastItem; // if we broke out of the above loop, the current item will be invalid
}
// If we're not using server paging and this isn't a collection, or server paging doesn't return a page count, our _pageCount isn't accurate.
// Loop through the rest of the enumeration to figure out how many items are in it.
if ((!_useServerPaging && !(dataSource is ICollection)) || (_useServerPaging && itemCount < 0)) {
itemCount = currentItemIndex;
while (moveNextSucceeded) {
itemCount++;
moveNextSucceeded = dataSourceEnumerator.MoveNext();
}
}
_dataItemIndex = currentItemIndex;
bool singlePage = itemCount <= 1 && !_useServerPaging; // hide pagers if there's only one item
if (allowPaging && PagerSettings.Visible && _pagerSettings.IsPagerOnTop && !singlePage && mode != DetailsViewMode.Insert) {
// top pager
_topPagerRow = CreateRow(-1, DataControlRowType.Pager, DataControlRowState.Normal, null, rows, pagedDataSource);
}
_headerRow = CreateRow(-1, DataControlRowType.Header, DataControlRowState.Normal, null, rows, null);
if (_headerTemplate == null && HeaderText.Length == 0) {
_headerRow.Visible = false;
}
_rowsArray.AddRange(CreateDataRows(dataBinding, rows, _dataItem));
if (itemIndex >= 0) {
string[] keyFields = DataKeyNamesInternal;
if (dataBinding && (keyFields.Length != 0)) {
foreach (string keyName in keyFields) {
object keyValue = DataBinder.GetPropertyValue(_dataItem, keyName);
keyTable.Add(keyName, keyValue);
}
_dataKey = new DataKey(keyTable);
}
}
_footerRow = CreateRow(-1, DataControlRowType.Footer, DataControlRowState.Normal, null, rows, null);
if (_footerTemplate == null && FooterText.Length == 0) {
_footerRow.Visible = false;
}
if (allowPaging && PagerSettings.Visible && _pagerSettings.IsPagerOnBottom && !singlePage && mode != DetailsViewMode.Insert) {
// bottom pager
_bottomPagerRow = CreateRow(-1, DataControlRowType.Pager, DataControlRowState.Normal, null, rows, pagedDataSource);
}
}
_pageCount = itemCount;
OnItemCreated(EventArgs.Empty);
if (dataBinding) {
DataBind(false);
}
return itemCount;
}
///
/// Creates new control style.
///
protected override Style CreateControlStyle() {
TableStyle controlStyle = new TableStyle();
// initialize defaults that are different from TableStyle
controlStyle.GridLines = GridLines.Both;
controlStyle.CellSpacing = 0;
return controlStyle;
}
private ICollection CreateDataRows(bool dataBinding, TableRowCollection rows, object dataItem) {
ArrayList rowsArray = new ArrayList();
rowsArray.AddRange(CreateDataRowsFromFields(dataItem, dataBinding, rows));
return rowsArray;
}
private ICollection CreateDataRowsFromFields(object dataItem, bool dataBinding, TableRowCollection rows) {
int fieldCount = 0;
ICollection fields = CreateFieldSet(dataItem, dataBinding);
ArrayList rowsArray = new ArrayList();
if (fields != null)
fieldCount = fields.Count;
if (fieldCount > 0) {
DataControlRowType rowType = DataControlRowType.DataRow;
DataControlRowState masterRowState = DataControlRowState.Normal;
int dataRowIndex = 0;
DetailsViewMode mode = Mode;
if (mode == DetailsViewMode.Edit)
masterRowState |= DataControlRowState.Edit;
else if (mode == DetailsViewMode.Insert)
masterRowState |= DataControlRowState.Insert;
bool requiresDataBinding = false;
foreach (DataControlField field in fields) {
if (field.Initialize(false, this)) {
requiresDataBinding = true;
}
if (DetermineRenderClientScript()) {
field.ValidateSupportsCallback();
}
DataControlRowState rowState = masterRowState;
if (dataRowIndex % 2 != 0) {
rowState |= DataControlRowState.Alternate;
}
rowsArray.Add(CreateRow(dataRowIndex, rowType, rowState, field, rows, null));
dataRowIndex++;
}
if (requiresDataBinding) {
RequiresDataBinding = true;
}
}
return rowsArray;
}
protected override DataSourceSelectArguments CreateDataSourceSelectArguments() {
DataSourceSelectArguments arguments = new DataSourceSelectArguments();
DataSourceView view = GetData();
_useServerPaging = AllowPaging && view.CanPage;
// decide if we should use server-side paging
if (_useServerPaging) {
arguments.StartRowIndex = PageIndex;
if (view.CanRetrieveTotalRowCount) {
arguments.RetrieveTotalRowCount = true;
arguments.MaximumRows = 1;
}
else {
arguments.MaximumRows = -1;
}
}
return arguments;
}
///
/// Creates the set of fields to be used to build up the control
/// hierarchy.
/// When AutoGenerateRows is true, the fields are created to match the
/// datasource and are appended to the set of fields defined in the Fields
/// collection.
///
protected virtual ICollection CreateFieldSet(object dataItem, bool useDataSource) {
ArrayList fieldsArray = new ArrayList();
if (AutoGenerateRows == true) {
if (RowsGenerator == null) {
object[] autoFieldsArray = null;
if (useDataSource) {
ICollection autoFields = CreateAutoGeneratedRows(dataItem);
if (autoFields != null) {
autoFieldsArray = new DataControlField[autoFields.Count];
autoFields.CopyTo(autoFieldsArray, 0);
}
}
else {
if (_autoGenFieldProps != null) {
int autoGenFieldPropsCount = _autoGenFieldProps.Count;
autoFieldsArray = new DataControlField[autoGenFieldPropsCount];
for (int i = 0; i < autoGenFieldPropsCount; i++) {
autoFieldsArray[i] = CreateAutoGeneratedRow((AutoGeneratedFieldProperties)_autoGenFieldProps[i]);
}
}
}
if (autoFieldsArray != null) {
int autoFieldCount = autoFieldsArray.Length;
for (int i = 0; i < autoFieldCount; i++)
fieldsArray.Add(autoFieldsArray[i]);
}
}
else {
fieldsArray.AddRange(RowsGenerator.GenerateFields(this));
}
}
foreach (DataControlField f in Fields) {
fieldsArray.Add(f);
}
if (AutoGenerateInsertButton || AutoGenerateDeleteButton || AutoGenerateEditButton) {
CommandField commandField = new CommandField();
commandField.ButtonType = ButtonType.Link;
if (AutoGenerateInsertButton) {
commandField.ShowInsertButton = true;
}
if (AutoGenerateDeleteButton) {
commandField.ShowDeleteButton = true;
}
if (AutoGenerateEditButton) {
commandField.ShowEditButton = true;
}
fieldsArray.Add(commandField);
}
return fieldsArray;
}
///
/// Creates the pager for NextPrev and NextPrev with First and Last styles
///
private void CreateNextPrevPager(TableRow row, PagedDataSource pagedDataSource, bool addFirstLastPageButtons) {
PagerSettings pagerSettings = PagerSettings;
string prevPageImageUrl = pagerSettings.PreviousPageImageUrl;
string nextPageImageUrl = pagerSettings.NextPageImageUrl;
bool isFirstPage = pagedDataSource.IsFirstPage;
bool isLastPage = pagedDataSource.IsLastPage;
if (addFirstLastPageButtons && !isFirstPage) {
string firstPageImageUrl = pagerSettings.FirstPageImageUrl;
TableCell cell = new TableCell();
row.Cells.Add(cell);
IButtonControl firstButton;
if (firstPageImageUrl.Length > 0) {
firstButton = new DataControlImageButton(this);
((DataControlImageButton)firstButton).ImageUrl = firstPageImageUrl;
((DataControlImageButton)firstButton).AlternateText = HttpUtility.HtmlDecode(pagerSettings.FirstPageText);
((DataControlImageButton)firstButton).EnableCallback(BuildCallbackArgument(0));
} else {
firstButton = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)firstButton).Text = pagerSettings.FirstPageText;
((DataControlPagerLinkButton)firstButton).EnableCallback(BuildCallbackArgument(0));
}
firstButton.CommandName = DataControlCommands.PageCommandName;
firstButton.CommandArgument = DataControlCommands.FirstPageCommandArgument;
cell.Controls.Add((Control)firstButton);
}
if (!isFirstPage) {
IButtonControl prevButton;
TableCell cell = new TableCell();
row.Cells.Add(cell);
if (prevPageImageUrl.Length > 0) {
prevButton = new DataControlImageButton(this);
((DataControlImageButton)prevButton).ImageUrl = prevPageImageUrl;
((DataControlImageButton)prevButton).AlternateText = HttpUtility.HtmlDecode(pagerSettings.PreviousPageText);
((DataControlImageButton)prevButton).EnableCallback(BuildCallbackArgument(PageIndex - 1));
} else {
prevButton = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)prevButton).Text = pagerSettings.PreviousPageText;
((DataControlPagerLinkButton)prevButton).EnableCallback(BuildCallbackArgument(PageIndex - 1));
}
prevButton.CommandName = DataControlCommands.PageCommandName;
prevButton.CommandArgument = DataControlCommands.PreviousPageCommandArgument;
cell.Controls.Add((Control)prevButton);
}
if (!isLastPage) {
IButtonControl nextButton;
TableCell cell = new TableCell();
row.Cells.Add(cell);
if (nextPageImageUrl.Length > 0) {
nextButton = new DataControlImageButton(this);
((DataControlImageButton)nextButton).ImageUrl = nextPageImageUrl;
((DataControlImageButton)nextButton).AlternateText = HttpUtility.HtmlDecode(pagerSettings.NextPageText);
((DataControlImageButton)nextButton).EnableCallback(BuildCallbackArgument(PageIndex + 1));
} else {
nextButton = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)nextButton).Text = pagerSettings.NextPageText;
((DataControlPagerLinkButton)nextButton).EnableCallback(BuildCallbackArgument(PageIndex + 1));
}
nextButton.CommandName = DataControlCommands.PageCommandName;
nextButton.CommandArgument = DataControlCommands.NextPageCommandArgument;
cell.Controls.Add((Control)nextButton);
}
if (addFirstLastPageButtons && !isLastPage) {
string lastPageImageUrl = pagerSettings.LastPageImageUrl;
IButtonControl lastButton;
TableCell cell = new TableCell();
row.Cells.Add(cell);
if (lastPageImageUrl.Length > 0) {
lastButton = new DataControlImageButton(this);
((DataControlImageButton)lastButton).ImageUrl = lastPageImageUrl;
((DataControlImageButton)lastButton).AlternateText = HttpUtility.HtmlDecode(pagerSettings.LastPageText);
((DataControlImageButton)lastButton).EnableCallback(BuildCallbackArgument(pagedDataSource.PageCount - 1));
} else {
lastButton = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)lastButton).Text = pagerSettings.LastPageText;
((DataControlPagerLinkButton)lastButton).EnableCallback(BuildCallbackArgument(pagedDataSource.PageCount - 1));
}
lastButton.CommandName = DataControlCommands.PageCommandName;
lastButton.CommandArgument = DataControlCommands.LastPageCommandArgument;
cell.Controls.Add((Control)lastButton);
}
}
///
/// Creates the pager for NextPrev and NextPrev with First and Last styles
///
private void CreateNumericPager(TableRow row, PagedDataSource pagedDataSource, bool addFirstLastPageButtons) {
PagerSettings pagerSettings = PagerSettings;
int pages = pagedDataSource.PageCount;
int currentPage = pagedDataSource.CurrentPageIndex + 1;
int pageSetSize = pagerSettings.PageButtonCount;
int pagesShown = pageSetSize;
int firstDisplayedPage = FirstDisplayedPageIndex + 1; // first page displayed on last postback
// ensure the number of pages we show isn't more than the number of pages that do exist
if (pages < pagesShown)
pagesShown = pages;
// initialize to the first page set, i.e., pages 1 through number of pages shown
int firstPage = 1;
int lastPage = pagesShown;
if (currentPage > lastPage) {
// The current page is not in the first page set, then we need to slide the
// range of pages shown by adjusting firstPage and lastPage
int currentPageSet = (currentPage - 1) / pageSetSize;
bool currentPageInLastDisplayRange = currentPage - firstDisplayedPage >= 0 && currentPage - firstDisplayedPage < pageSetSize;
if (firstDisplayedPage > 0 && currentPageInLastDisplayRange) {
firstPage = firstDisplayedPage;
}
else {
firstPage = currentPageSet * pageSetSize + 1;
}
lastPage = firstPage + pageSetSize - 1;
// now bring back lastPage into the range if its exceeded the number of pages
if (lastPage > pages)
lastPage = pages;
// if theres room to show more pages from the previous page set, then adjust
// the first page accordingly
if (lastPage - firstPage + 1 < pageSetSize) {
firstPage = Math.Max(1, lastPage - pageSetSize + 1);
}
FirstDisplayedPageIndex = firstPage - 1;
}
LinkButton button;
if (addFirstLastPageButtons && currentPage != 1 && firstPage != 1) {
string firstPageImageUrl = pagerSettings.FirstPageImageUrl;
IButtonControl firstButton;
TableCell cell = new TableCell();
row.Cells.Add(cell);
if (firstPageImageUrl.Length > 0) {
firstButton = new DataControlImageButton(this);
((DataControlImageButton)firstButton).ImageUrl = firstPageImageUrl;
((DataControlImageButton)firstButton).AlternateText = HttpUtility.HtmlDecode(pagerSettings.FirstPageText);
((DataControlImageButton)firstButton).EnableCallback(BuildCallbackArgument(0));
} else {
firstButton = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)firstButton).Text = pagerSettings.FirstPageText;
((DataControlPagerLinkButton)firstButton).EnableCallback(BuildCallbackArgument(0));
}
firstButton.CommandName = DataControlCommands.PageCommandName;
firstButton.CommandArgument = DataControlCommands.FirstPageCommandArgument;
cell.Controls.Add((Control)firstButton);
}
if (firstPage != 1) {
TableCell cell = new TableCell();
row.Cells.Add(cell);
button = new DataControlPagerLinkButton(this);
button.Text = "...";
button.CommandName = DataControlCommands.PageCommandName;
button.CommandArgument = (firstPage - 1).ToString(NumberFormatInfo.InvariantInfo);
((DataControlPagerLinkButton)button).EnableCallback(BuildCallbackArgument(firstPage - 2));
cell.Controls.Add(button);
}
for (int i = firstPage; i <= lastPage; i++) {
TableCell cell = new TableCell();
row.Cells.Add(cell);
string pageString = (i).ToString(NumberFormatInfo.InvariantInfo);
if (i == currentPage) {
Label label = new Label();
label.Text = pageString;
cell.Controls.Add(label);
} else {
button = new DataControlPagerLinkButton(this);
button.Text = pageString;
button.CommandName = DataControlCommands.PageCommandName;
button.CommandArgument = pageString;
((DataControlPagerLinkButton)button).EnableCallback(BuildCallbackArgument(i - 1));
cell.Controls.Add(button);
}
}
if (pages > lastPage) {
TableCell cell = new TableCell();
row.Cells.Add(cell);
button = new DataControlPagerLinkButton(this);
button.Text = "...";
button.CommandName = DataControlCommands.PageCommandName;
button.CommandArgument = (lastPage + 1).ToString(NumberFormatInfo.InvariantInfo);
((DataControlPagerLinkButton)button).EnableCallback(BuildCallbackArgument(lastPage));
cell.Controls.Add(button);
}
bool isLastPageShown = lastPage == pages;
if (addFirstLastPageButtons && currentPage != pages && !isLastPageShown) {
string lastPageImageUrl = pagerSettings.LastPageImageUrl;
TableCell cell = new TableCell();
row.Cells.Add(cell);
IButtonControl lastButton;
if (lastPageImageUrl.Length > 0) {
lastButton = new DataControlImageButton(this);
((DataControlImageButton)lastButton).ImageUrl = lastPageImageUrl;
((DataControlImageButton)lastButton).AlternateText = HttpUtility.HtmlDecode(pagerSettings.LastPageText);
((DataControlImageButton)lastButton).EnableCallback(BuildCallbackArgument(pagedDataSource.PageCount - 1));
} else {
lastButton = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)lastButton).Text = pagerSettings.LastPageText;
((DataControlPagerLinkButton)lastButton).EnableCallback(BuildCallbackArgument(pagedDataSource.PageCount - 1));
}
lastButton.CommandName = DataControlCommands.PageCommandName;
lastButton.CommandArgument = DataControlCommands.LastPageCommandArgument;
cell.Controls.Add((Control)lastButton);
}
}
private PagedDataSource CreatePagedDataSource() {
PagedDataSource pagedDataSource = new PagedDataSource();
pagedDataSource.CurrentPageIndex = PageIndex;
pagedDataSource.PageSize = 1;
pagedDataSource.AllowPaging = AllowPaging;
pagedDataSource.AllowCustomPaging = false;
pagedDataSource.AllowServerPaging = false;
pagedDataSource.VirtualCount = 0;
return pagedDataSource;
}
private PagedDataSource CreateServerPagedDataSource(int totalRowCount) {
PagedDataSource pagedDataSource = new PagedDataSource();
pagedDataSource.CurrentPageIndex = PageIndex;
pagedDataSource.PageSize = 1;
pagedDataSource.AllowPaging = AllowPaging;
pagedDataSource.AllowCustomPaging = false;
pagedDataSource.AllowServerPaging = true;
pagedDataSource.VirtualCount = totalRowCount;
return pagedDataSource;
}
private DetailsViewRow CreateRow(int rowIndex, DataControlRowType rowType, DataControlRowState rowState, DataControlField field, TableRowCollection rows, PagedDataSource pagedDataSource) {
DetailsViewRow row = CreateRow(rowIndex, rowType, rowState);
rows.Add(row);
if (rowType != DataControlRowType.Pager) {
InitializeRow(row, field);
} else {
InitializePager(row, pagedDataSource);
}
return row;
}
///
/// [To be supplied.]
///
protected virtual DetailsViewRow CreateRow(int rowIndex, DataControlRowType rowType, DataControlRowState rowState) {
if (rowType == DataControlRowType.Pager) {
return new DetailsViewPagerRow(rowIndex, rowType, rowState);
}
return new DetailsViewRow(rowIndex, rowType, rowState);
}
///
/// Creates a new Table, which is the containing table
///
protected virtual Table CreateTable() {
return new ChildTable(String.IsNullOrEmpty(ID) ? null : ClientID);
}
/// Data bound controls should override PerformDataBinding instead
/// of DataBind. If DataBind if overridden, the OnDataBinding and OnDataBound events will
/// fire in the wrong order. However, for backwards compat on ListControl and AdRotator, we
/// can't seal this method. It is sealed on all new BaseDataBoundControl-derived controls.
public override sealed void DataBind() {
base.DataBind();
}
public virtual void DeleteItem() {
HandleDelete(String.Empty);
}
private bool DetermineRenderClientScript() {
// In a client script-enabled control, always determine whether to render the
// client script-based functionality.
// The decision should be based on browser capabilities.
if (!_renderClientScriptValid) {
_renderClientScript = false;
if (EnablePagingCallbacks && (Context != null) && (Page != null) && (Page.RequestInternal != null) && Page.Request.Browser.SupportsCallback && !IsParentedToUpdatePanel) {
HttpBrowserCapabilities browserCaps = Page.Request.Browser;
bool hasEcmaScript = browserCaps.EcmaScriptVersion.Major > 0;
bool hasDOM = browserCaps.W3CDomVersion.Major > 0;
#if SHIPPINGADAPTERS
bool isHtml4 = !(Page.PageAdapter is Html32PageAdapter) &&
(!StringUtil.EqualsIgnoreCase(browserCaps["tagwriter"], typeof(Html32TextWriter).FullName));
#else
bool isHtml4 = (!StringUtil.EqualsIgnoreCase(browserCaps["tagwriter"], typeof(Html32TextWriter).FullName));
#endif
_renderClientScript = hasEcmaScript && hasDOM && isHtml4;
}
_renderClientScriptValid = true;
}
return _renderClientScript;
}
///
/// Override EnsureDataBound because we don't want to databind when we're in insert mode
///
protected override void EnsureDataBound() {
if (RequiresDataBinding && Mode == DetailsViewMode.Insert && !AutoGenerateRows) {
OnDataBinding(EventArgs.Empty);
RequiresDataBinding = false;
MarkAsDataBound();
if(_adapter != null) {
DataBoundControlAdapter dataBoundControlAdapter = _adapter as DataBoundControlAdapter;
if(dataBoundControlAdapter != null) {
dataBoundControlAdapter.PerformDataBinding(null);
}
else {
PerformDataBinding(null);
}
}
else {
PerformDataBinding(null);
}
OnDataBound(EventArgs.Empty);
}
else {
base.EnsureDataBound();
}
}
protected virtual void ExtractRowValues(IOrderedDictionary fieldValues, bool includeReadOnlyFields, bool includeKeys) {
if (fieldValues == null) {
Debug.Assert(false, "DetailsView::ExtractRowValues- must hand in a valid reference to an IDictionary.");
return;
}
ICollection fieldSet = CreateFieldSet(null, false);
object[] fields = new object[fieldSet.Count];
fieldSet.CopyTo(fields, 0);
int cellIndex;
DetailsViewRowCollection rows = Rows;
string[] dataKeyNames = DataKeyNamesInternal;
// Field and row count should match, but if there was no data, or if the user removed some rows,
// these may no longer match. Make sure we don't exceed the bounds.
for (int i = 0; i < fields.Length && i < rows.Count; i++) {
cellIndex = 0;
if (((DataControlField)fields[i]).ShowHeader) {
cellIndex = 1;
}
if (!((DataControlField)fields[i]).Visible) {
continue;
}
OrderedDictionary newValues = new OrderedDictionary();
((DataControlField)fields[i]).ExtractValuesFromCell(newValues, rows[i].Cells[cellIndex] as DataControlFieldCell, rows[i].RowState, includeReadOnlyFields);
foreach (DictionaryEntry entry in newValues) {
if (includeKeys || (Array.IndexOf(dataKeyNames, entry.Key) == -1)) {
fieldValues[entry.Key] = entry.Value;
}
}
}
}
protected virtual string GetCallbackResult() {
StringWriter stringWriter = new StringWriter(CultureInfo.InvariantCulture);
//
HtmlTextWriter writer = new HtmlTextWriter(stringWriter);
IStateFormatter formatter = Page.CreateStateFormatter();
RenderTableContents(writer);
writer.Flush();
writer.Close();
object dataKeyState = OrderedDictionaryStateHelper.SaveViewState(KeyTable);
string dataKeyString = formatter.Serialize(dataKeyState);
// this should return the html that goes in the panel, plus the new page info.
return Convert.ToString(PageIndex, CultureInfo.InvariantCulture) + "|" + dataKeyString + "|" + stringWriter.ToString();
}
protected virtual string GetCallbackScript(IButtonControl buttonControl, string argument) {
if (DetermineRenderClientScript()) {
if (!String.IsNullOrEmpty(argument)) {
if (Page != null) {
Page.ClientScript.RegisterForEventValidation(UniqueID, argument);
}
string clientCallbackReference = "javascript:__dv" + ClientID + ".callback";
return clientCallbackReference + "(" + argument + "); return false;";
}
}
return null;
}
private void HandleCancel() {
bool isBoundToDataSourceControl = IsBoundUsingDataSourceID;
DetailsViewModeEventArgs e = new DetailsViewModeEventArgs(DefaultMode, true);
OnModeChanging(e);
if (e.Cancel) {
return;
}
if (isBoundToDataSourceControl) {
Mode = e.NewMode;
OnModeChanged(EventArgs.Empty);
}
RequiresDataBinding = true;
}
private void HandleDelete(string commandArg) {
int pageIndex = PageIndex;
if (pageIndex < 0) { // don't attempt to delete in Insert mode
return;
}
DataSourceView view = null;
bool isBoundToDataSourceControl = IsBoundUsingDataSourceID;
if (isBoundToDataSourceControl) {
view = GetData();
if (view == null) {
throw new HttpException(SR.GetString(SR.View_DataSourceReturnedNullView, ID));
}
}
DetailsViewDeleteEventArgs e = new DetailsViewDeleteEventArgs(pageIndex);
if (isBoundToDataSourceControl) {
ExtractRowValues(e.Values, true/*includeReadOnlyFields*/, false/*includePrimaryKey*/);
foreach (DictionaryEntry entry in DataKey.Values) {
e.Keys.Add(entry.Key, entry.Value);
if (e.Values.Contains(entry.Key)) {
e.Values.Remove(entry.Key);
}
}
}
OnItemDeleting(e);
if (e.Cancel) {
return;
}
if (isBoundToDataSourceControl) {
_deleteKeys = e.Keys;
_deleteValues = e.Values;
view.Delete(e.Keys, e.Values, HandleDeleteCallback);
}
}
private bool HandleDeleteCallback(int affectedRows, Exception ex) {
int pageIndex = PageIndex;
DetailsViewDeletedEventArgs dea = new DetailsViewDeletedEventArgs(affectedRows, ex);
dea.SetKeys(_deleteKeys);
dea.SetValues(_deleteValues);
OnItemDeleted(dea);
_deleteKeys = null;
_deleteValues = null;
if (ex != null && !dea.ExceptionHandled) {
// If there is no validator in the validation group that could make sense
// of the error, return false to proceed with standard exception handling.
// But if there is one, we want to let it display its error instead of throwing.
if (PageIsValidAfterModelException()) {
return false;
}
}
if (pageIndex == _pageCount - 1) {
HandlePage(pageIndex - 1);
}
RequiresDataBinding = true;
return true;
}
private void HandleEdit() {
if (PageIndex < 0) {
return;
}
DetailsViewModeEventArgs e = new DetailsViewModeEventArgs(DetailsViewMode.Edit, false);
OnModeChanging(e);
if (e.Cancel) {
return;
}
if (IsBoundUsingDataSourceID) {
Mode = e.NewMode;
OnModeChanged(EventArgs.Empty);
}
RequiresDataBinding = true;
}
private bool HandleEvent(EventArgs e, bool causesValidation, string validationGroup) {
bool handled = false;
_modelValidationGroup = null;
if (causesValidation && Page != null) {
Page.Validate(validationGroup);
if (EnableModelValidation) {
_modelValidationGroup = validationGroup;
}
}
DetailsViewCommandEventArgs dce = e as DetailsViewCommandEventArgs;
if (dce != null) {
OnItemCommand(dce);
handled = true;
string command = dce.CommandName;
int newItemIndex = PageIndex;
if (StringUtil.EqualsIgnoreCase(command, DataControlCommands.PageCommandName)) {
string itemIndexArg = (string)dce.CommandArgument;
if (StringUtil.EqualsIgnoreCase(itemIndexArg, DataControlCommands.NextPageCommandArgument)) {
newItemIndex++;
} else if (StringUtil.EqualsIgnoreCase(itemIndexArg, DataControlCommands.PreviousPageCommandArgument)) {
newItemIndex--;
} else if (StringUtil.EqualsIgnoreCase(itemIndexArg, DataControlCommands.FirstPageCommandArgument)) {
newItemIndex = 0;
} else if (StringUtil.EqualsIgnoreCase(itemIndexArg, DataControlCommands.LastPageCommandArgument)) {
newItemIndex = PageCount - 1;
} else {
// argument is page number, and page index is 1 less than that
newItemIndex = Convert.ToInt32(itemIndexArg, CultureInfo.InvariantCulture) - 1;
}
HandlePage(newItemIndex);
} else if (StringUtil.EqualsIgnoreCase(command, DataControlCommands.EditCommandName)) {
HandleEdit();
} else if (StringUtil.EqualsIgnoreCase(command, DataControlCommands.UpdateCommandName)) {
HandleUpdate((string)dce.CommandArgument, causesValidation);
} else if (StringUtil.EqualsIgnoreCase(command, DataControlCommands.CancelCommandName)) {
HandleCancel();
} else if (StringUtil.EqualsIgnoreCase(command, DataControlCommands.DeleteCommandName)) {
HandleDelete((string)dce.CommandArgument);
} else if (StringUtil.EqualsIgnoreCase(command, DataControlCommands.InsertCommandName)) {
HandleInsert((string)dce.CommandArgument, causesValidation);
} else if (StringUtil.EqualsIgnoreCase(command, DataControlCommands.NewCommandName)) {
HandleNew();
}
}
return handled;
}
private void HandleInsert(string commandArg, bool causesValidation) {
if (causesValidation && Page != null && !Page.IsValid) {
return;
}
if (Mode != DetailsViewMode.Insert) {
throw new HttpException(SR.GetString(SR.DetailsViewFormView_ControlMustBeInInsertMode, "DetailsView", ID));
}
DataSourceView view = null;
bool isBoundToDataSourceControl = IsBoundUsingDataSourceID;
if (isBoundToDataSourceControl) {
view = GetData();
if (view == null) {
throw new HttpException(SR.GetString(SR.View_DataSourceReturnedNullView, ID));
}
}
DetailsViewInsertEventArgs e = new DetailsViewInsertEventArgs(commandArg);
if (isBoundToDataSourceControl) {
ExtractRowValues(e.Values, false/*includeReadOnlyFields*/, true/*includePrimaryKey*/);
}
OnItemInserting(e);
if (e.Cancel) {
return;
}
if (isBoundToDataSourceControl) {
_insertValues = e.Values;
view.Insert(e.Values, HandleInsertCallback);
}
}
private bool HandleInsertCallback(int affectedRows, Exception ex) {
DetailsViewInsertedEventArgs dea = new DetailsViewInsertedEventArgs(affectedRows, ex);
dea.SetValues(_insertValues);
OnItemInserted(dea);
_insertValues = null;
if (ex != null && !dea.ExceptionHandled) {
// If there is no validator in the validation group that could make sense
// of the error, return false to proceed with standard exception handling.
// But if there is one, we want to let it display its error instead of throwing.
if (PageIsValidAfterModelException()) {
return false;
}
dea.KeepInInsertMode = true;
}
if (!dea.KeepInInsertMode) {
DetailsViewModeEventArgs eMode = new DetailsViewModeEventArgs(DefaultMode, false);
OnModeChanging(eMode);
if (!eMode.Cancel) {
Mode = eMode.NewMode;
OnModeChanged(EventArgs.Empty);
RequiresDataBinding = true;
}
}
return true;
}
private void HandleNew() {
DetailsViewModeEventArgs e = new DetailsViewModeEventArgs(DetailsViewMode.Insert, false);
OnModeChanging(e);
if (e.Cancel) {
return;
}
if (IsBoundUsingDataSourceID) {
Mode = e.NewMode;
OnModeChanged(EventArgs.Empty);
}
RequiresDataBinding = true;
}
private void HandlePage(int newPage) {
if (!AllowPaging) {
return;
}
if (PageIndex < 0) {
return;
}
bool isBoundToDataSourceControl = IsBoundUsingDataSourceID;
DetailsViewPageEventArgs e = new DetailsViewPageEventArgs(newPage);
OnPageIndexChanging(e);
if (e.Cancel) {
return;
}
if (isBoundToDataSourceControl) {
if (e.NewPageIndex > -1) {
// if the requested page is out of range and we're already on the last page, don't rebind
if ((e.NewPageIndex >= PageCount && _pageIndex == PageCount - 1)) {
return;
}
// DevDiv Bugs 188830: Don't clear key table if page is out of range, since control won't be rebound.
_keyTable = null;
_pageIndex = e.NewPageIndex;
}
else {
return;
}
}
OnPageIndexChanged(EventArgs.Empty);
RequiresDataBinding = true;
}
private void HandleUpdate(string commandArg, bool causesValidation) {
if (causesValidation && Page != null && !Page.IsValid) {
return;
}
if (Mode != DetailsViewMode.Edit) {
throw new HttpException(SR.GetString(SR.DetailsViewFormView_ControlMustBeInEditMode, "DetailsView", ID));
}
if (PageIndex < 0) {
return;
}
DataSourceView view = null;
bool isBoundToDataSourceControl = IsBoundUsingDataSourceID;
if (isBoundToDataSourceControl) {
view = GetData();
if (view == null) {
throw new HttpException(SR.GetString(SR.View_DataSourceReturnedNullView, ID));
}
}
DetailsViewUpdateEventArgs e = new DetailsViewUpdateEventArgs(commandArg);
if (isBoundToDataSourceControl) {
foreach (DictionaryEntry entry in BoundFieldValues) {
e.OldValues.Add(entry.Key, entry.Value);
}
ExtractRowValues(e.NewValues, false/*includeReadOnlyFields*/, true/*includePrimaryKey*/);
foreach (DictionaryEntry entry in DataKey.Values) {
e.Keys.Add(entry.Key, entry.Value);
}
}
OnItemUpdating(e);
if (e.Cancel) {
return;
}
if (isBoundToDataSourceControl) {
_updateKeys = e.Keys;
_updateNewValues = e.NewValues;
_updateOldValues = e.OldValues;
view.Update(e.Keys, e.NewValues, e.OldValues, HandleUpdateCallback);
}
}
private bool HandleUpdateCallback(int affectedRows, Exception ex) {
DetailsViewUpdatedEventArgs dea = new DetailsViewUpdatedEventArgs(affectedRows, ex);
dea.SetOldValues(_updateOldValues);
dea.SetNewValues(_updateNewValues);
dea.SetKeys(_updateKeys);
OnItemUpdated(dea);
_updateKeys = null;
_updateOldValues = null;
_updateNewValues = null;
if (ex != null && !dea.ExceptionHandled) {
// If there is no validator in the validation group that could make sense
// of the error, return false to proceed with standard exception handling.
// But if there is one, we want to let it display its error instead of throwing.
if (PageIsValidAfterModelException()) {
return false;
}
dea.KeepInEditMode = true;
}
if (!dea.KeepInEditMode) {
DetailsViewModeEventArgs eMode = new DetailsViewModeEventArgs(DefaultMode, false);
OnModeChanging(eMode);
if (!eMode.Cancel) {
Mode = eMode.NewMode;
OnModeChanged(EventArgs.Empty);
RequiresDataBinding = true;
}
}
return true;
}
///
///
/// Creates a DetailsViewRow that contains the paging UI.
/// The paging UI is a navigation bar that is a built into a single TableCell that
/// spans across all fields of the DetailsView.
///
///
protected virtual void InitializePager(DetailsViewRow row, PagedDataSource pagedDataSource) {
TableCell cell = new TableCell();
PagerSettings pagerSettings = PagerSettings;
if (_pagerTemplate != null) {
_pagerTemplate.InstantiateIn(cell);
}
else {
PagerTable pagerTable = new PagerTable();
TableRow pagerTableRow = new TableRow();
cell.Controls.Add(pagerTable);
pagerTable.Rows.Add(pagerTableRow);
switch (pagerSettings.Mode) {
case PagerButtons.NextPrevious:
CreateNextPrevPager(pagerTableRow, pagedDataSource, false);
break;
case PagerButtons.Numeric:
CreateNumericPager(pagerTableRow, pagedDataSource, false);
break;
case PagerButtons.NextPreviousFirstLast:
CreateNextPrevPager(pagerTableRow, pagedDataSource, true);
break;
case PagerButtons.NumericFirstLast:
CreateNumericPager(pagerTableRow, pagedDataSource, true);
break;
}
}
cell.ColumnSpan = 2;
row.Cells.Add(cell);
}
///
/// [To be supplied.]
///
protected virtual void InitializeRow(DetailsViewRow row, DataControlField field) {
TableCellCollection cells = row.Cells;
DataControlFieldCell contentCell = new DataControlFieldCell(field);
ITemplate contentTemplate = null;
int itemIndex = DataItemIndex;
DataControlRowState rowState = row.RowState;
switch (row.RowType) {
case DataControlRowType.DataRow:
if (field.ShowHeader) {
DataControlFieldCell headerTextCell = new DataControlFieldCell(field);
field.InitializeCell(headerTextCell, DataControlCellType.Header, rowState, itemIndex);
cells.Add(headerTextCell);
}
else {
contentCell.ColumnSpan = 2;
}
field.InitializeCell(contentCell, DataControlCellType.DataCell, rowState, itemIndex);
break;
case DataControlRowType.Header:
contentTemplate = _headerTemplate;
contentCell.ColumnSpan = 2;
string headerText = HeaderText;
if (_headerTemplate == null && headerText.Length > 0) {
contentCell.Text = headerText;
}
break;
case DataControlRowType.Footer:
contentTemplate = _footerTemplate;
contentCell.ColumnSpan = 2;
string footerText = FooterText;
if (_footerTemplate == null && footerText.Length > 0) {
contentCell.Text = footerText;
}
break;
case DataControlRowType.EmptyDataRow:
contentTemplate = _emptyDataTemplate;
string emptyDataText = EmptyDataText;
if (_emptyDataTemplate == null && emptyDataText.Length > 0) {
contentCell.Text = emptyDataText;
}
break;
}
if (contentTemplate != null) {
contentTemplate.InstantiateIn(contentCell);
}
cells.Add(contentCell);
}
public virtual void InsertItem(bool causesValidation) {
HandleInsert(String.Empty, causesValidation);
}
///
/// Determines if the specified data type can be bound to.
///
public virtual bool IsBindableType(Type type) {
return DataBoundControlHelper.IsBindableType(type);
}
///
/// Loads the control state for those properties that should persist across postbacks
/// even when EnableViewState=false.
///
protected internal override void LoadControlState(object savedState) {
// Any properties that could have been set in the persistance need to be
// restored to their defaults if they're not in ControlState, or they will
// be restored to their persisted state instead of their empty state.
_pageIndex = 0;
_defaultMode = DetailsViewMode.ReadOnly;
_dataKeyNames = new string[0];
_pageCount = 0;
object[] state = savedState as object[];
if (state != null) {
base.LoadControlState(state[0]);
if (state[1] != null) {
_pageIndex = (int)state[1];
}
if (state[2] != null) {
_defaultMode = (DetailsViewMode)state[2];
}
// if Mode isn't saved, it should be restored to DefaultMode. That will happen in Mode's getter,
// since the persistance state hasn't been loaded yet.
if (state[3] != null) {
Mode = (DetailsViewMode)state[3];
}
if (state[4] != null) {
_dataKeyNames = (string[])state[4];
}
if (state[5] != null) {
KeyTable.Clear();
OrderedDictionaryStateHelper.LoadViewState((OrderedDictionary)KeyTable, (ArrayList)state[5]);
}
if (state[6] != null) {
_pageCount = (int)state[6];
}
}
else {
base.LoadControlState(null);
}
}
private bool LoadHiddenFieldState(string pageIndex, string dataKey) {
bool propertyChanged = false;
int oldPageIndex = Int32.Parse(pageIndex, CultureInfo.InvariantCulture);
if (PageIndex != oldPageIndex) {
propertyChanged = true;
// since we can't go into insert mode in a callback, oldPageIndex should never be -1 and different from PageIndex
Debug.Assert(oldPageIndex >= 0, "Page indeces are out of sync from callback hidden field state");
_pageIndex = oldPageIndex;
string oldDataKeyString = dataKey;
if (!String.IsNullOrEmpty(oldDataKeyString)) {
IStateFormatter formatter = Page.CreateStateFormatter();
ArrayList oldDataKeyState = formatter.Deserialize(oldDataKeyString) as ArrayList;
if (_keyTable != null) {
_keyTable.Clear();
}
OrderedDictionaryStateHelper.LoadViewState(KeyTable, oldDataKeyState);
}
}
return propertyChanged;
}
///
/// Loads a saved state of the
///
protected override void LoadViewState(object savedState) {
if (savedState != null) {
object[] myState = (object[])savedState;
base.LoadViewState(myState[0]);
if (myState[1] != null)
((IStateManager)PagerStyle).LoadViewState(myState[1]);
if (myState[2] != null)
((IStateManager)HeaderStyle).LoadViewState(myState[2]);
if (myState[3] != null)
((IStateManager)FooterStyle).LoadViewState(myState[3]);
if (myState[4] != null)
((IStateManager)RowStyle).LoadViewState(myState[4]);
if (myState[5] != null)
((IStateManager)AlternatingRowStyle).LoadViewState(myState[5]);
if (myState[6] != null)
((IStateManager)CommandRowStyle).LoadViewState(myState[6]);
if (myState[7] != null)
((IStateManager)EditRowStyle).LoadViewState(myState[7]);
if (myState[8] != null)
((IStateManager)InsertRowStyle).LoadViewState(myState[8]);
if (myState[9] != null)
((IStateManager)FieldHeaderStyle).LoadViewState(myState[9]);
if (myState[10] != null)
((IStateManager)Fields).LoadViewState(myState[10]);
if (myState[11] != null)
OrderedDictionaryStateHelper.LoadViewState((OrderedDictionary)BoundFieldValues, (ArrayList)myState[11]);
if (myState[12] != null)
((IStateManager)PagerSettings).LoadViewState(myState[12]);
if (myState[13] != null)
((IStateManager)ControlStyle).LoadViewState(myState[13]);
if (myState[14] != null) {
object[] autoGenFieldStateArray = (object[])myState[14];
int fieldCount = autoGenFieldStateArray.Length;
_autoGenFieldProps = new ArrayList();
for (int i = 0; i < fieldCount; i++) {
AutoGeneratedFieldProperties fieldProps = new AutoGeneratedFieldProperties();
((IStateManager)fieldProps).TrackViewState();
((IStateManager)fieldProps).LoadViewState(autoGenFieldStateArray[i]);
_autoGenFieldProps.Add(fieldProps);
}
}
}
else {
base.LoadViewState(null);
}
}
///
///
protected override bool OnBubbleEvent(object source, EventArgs e) {
bool causesValidation = false;
string validationGroup = String.Empty;
DetailsViewCommandEventArgs dvcea = e as DetailsViewCommandEventArgs;
if (dvcea != null) {
IButtonControl button = dvcea.CommandSource as IButtonControl;
if (button != null) {
causesValidation = button.CausesValidation;
validationGroup = button.ValidationGroup;
}
}
return HandleEvent(e, causesValidation, validationGroup);
}
protected override void OnDataSourceViewChanged(object sender, EventArgs e) {
_keyTable = null;
base.OnDataSourceViewChanged(sender, e);
}
private void OnFieldsChanged(object sender, EventArgs e) {
if (Initialized) {
RequiresDataBinding = true;
}
}
///
/// DetailsView initialization.
///
protected internal override void OnInit(EventArgs e) {
base.OnInit(e);
if (Page != null) {
if (DataKeyNames.Length > 0 && !AutoGenerateRows) {
Page.RegisterRequiresViewStateEncryption();
}
Page.RegisterRequiresControlState(this);
}
}
///
/// Raises the
///
protected virtual void OnItemCommand(DetailsViewCommandEventArgs e) {
DetailsViewCommandEventHandler handler = (DetailsViewCommandEventHandler)Events[EventItemCommand];
if (handler != null) {
handler(this, e);
}
}
///
/// Raises the
///
protected virtual void OnItemCreated(EventArgs e) {
EventHandler handler = (EventHandler)Events[EventItemCreated];
if (handler != null) {
handler(this, e);
}
}
///
/// Raises the
///
protected virtual void OnItemDeleted(DetailsViewDeletedEventArgs e) {
DetailsViewDeletedEventHandler handler = (DetailsViewDeletedEventHandler)Events[EventItemDeleted];
if (handler != null) handler(this, e);
}
///
/// Raises the
///
protected virtual void OnItemDeleting(DetailsViewDeleteEventArgs e) {
bool isBoundToDataSourceControl = IsBoundUsingDataSourceID;
DetailsViewDeleteEventHandler handler = (DetailsViewDeleteEventHandler)Events[EventItemDeleting];
if (handler != null) {
handler(this, e);
} else {
if (isBoundToDataSourceControl == false && e.Cancel == false) {
throw new HttpException(SR.GetString(SR.DetailsView_UnhandledEvent, ID, "ItemDeleting"));
}
}
}
///
/// Raises the
///
protected virtual void OnItemInserted(DetailsViewInsertedEventArgs e) {
DetailsViewInsertedEventHandler handler = (DetailsViewInsertedEventHandler)Events[EventItemInserted];
if (handler != null) handler(this, e);
}
///
/// Raises the
///
protected virtual void OnItemInserting(DetailsViewInsertEventArgs e) {
bool isBoundToDataSourceControl = IsBoundUsingDataSourceID;
DetailsViewInsertEventHandler handler = (DetailsViewInsertEventHandler)Events[EventItemInserting];
if (handler != null) {
handler(this, e);
} else {
if (isBoundToDataSourceControl == false && e.Cancel == false) {
throw new HttpException(SR.GetString(SR.DetailsView_UnhandledEvent, ID, "ItemInserting"));
}
}
}
///
/// Raises the
///
protected virtual void OnItemUpdated(DetailsViewUpdatedEventArgs e) {
DetailsViewUpdatedEventHandler handler = (DetailsViewUpdatedEventHandler)Events[EventItemUpdated];
if (handler != null) handler(this, e);
}
///
/// Raises the
///
protected virtual void OnItemUpdating(DetailsViewUpdateEventArgs e) {
bool isBoundToDataSourceControl = IsBoundUsingDataSourceID;
DetailsViewUpdateEventHandler handler = (DetailsViewUpdateEventHandler)Events[EventItemUpdating];
if (handler != null) {
handler(this, e);
} else {
if (isBoundToDataSourceControl == false && e.Cancel == false) {
throw new HttpException(SR.GetString(SR.DetailsView_UnhandledEvent, ID, "ItemUpdating"));
}
}
}
///
/// Raises the
///
protected virtual void OnModeChanged(EventArgs e) {
EventHandler handler = (EventHandler)Events[EventModeChanged];
if (handler != null) handler(this, e);
}
///
/// Raises the
///
protected virtual void OnModeChanging(DetailsViewModeEventArgs e) {
bool isBoundToDataSourceControl = IsBoundUsingDataSourceID;
DetailsViewModeEventHandler handler = (DetailsViewModeEventHandler)Events[EventModeChanging];
if (handler != null) {
handler(this, e);
} else {
if (isBoundToDataSourceControl == false && e.Cancel == false) {
throw new HttpException(SR.GetString(SR.DetailsView_UnhandledEvent, ID, "ModeChanging"));
}
}
}
///
/// Raises the
///
protected virtual void OnPageIndexChanged(EventArgs e) {
EventHandler handler = (EventHandler)Events[EventPageIndexChanged];
if (handler != null) handler(this, e);
}
///
/// Raises the
///
protected virtual void OnPageIndexChanging(DetailsViewPageEventArgs e) {
bool isBoundToDataSourceControl = IsBoundUsingDataSourceID;
DetailsViewPageEventHandler handler = (DetailsViewPageEventHandler)Events[EventPageIndexChanging];
if (handler != null) {
handler(this, e);
} else {
if (isBoundToDataSourceControl == false && e.Cancel == false) {
throw new HttpException(SR.GetString(SR.DetailsView_UnhandledEvent, ID, "PageIndexChanging"));
}
}
}
protected override void OnPagePreLoad(object sender, EventArgs e) {
// Load hidden field state here to overwrite control state properties. LoadViewState and LoadControlState
// may not get called if there's no state in them. We should allow the user to
// set EnablePagingCallbacks in Page_Load, so don't request from DetermineRenderClientScript here.
if (Page != null && !Page.IsCallback && Page.RequestValueCollection != null) {
string hiddenFieldID = "__dv" + ClientID + "__hidden";
string hiddenFieldState = Page.RequestValueCollection[hiddenFieldID];
if (!String.IsNullOrEmpty(hiddenFieldState)) {
if (ParseHiddenFieldState(hiddenFieldState)) {
RequiresDataBinding = true;
}
}
}
base.OnPagePreLoad(sender, e);
}
private void OnPagerPropertyChanged(object sender, EventArgs e) {
if (Initialized) {
RequiresDataBinding = true;
}
}
private const string startupScriptFormat = @"
var {0} = new DetailsView();
{0}.stateField = document.getElementById('{1}');
{0}.panelElement = document.getElementById('{0}__div');
{0}.pageIndex = {3};
{0}.setStateField();
{0}.callback = function(arg) {{
{2};
}};";
///
/// Sets up the callback scripts if client script is supported on the client
///
protected internal override void OnPreRender(EventArgs e) {
base.OnPreRender(e);
if (DetermineRenderClientScript() && Page != null) {
string clientReference = "__dv" + ClientID;
ClientScriptManager scriptOM = Page.ClientScript;
scriptOM.RegisterClientScriptResource(typeof(DetailsView), "DetailsView.js");
// The return value of GetCallbackEventReference looks like this:
// "__doCallBack(controlname, script fx that returns arg, "DetailsView_OnCallback, context, errorMethod)"
string doCallBackCall = scriptOM.GetCallbackEventReference(this, clientReference + ".getHiddenFieldContents(arg)", "DetailsView_OnCallback", clientReference);
// Hidden field used to post content from DetailsView
// back to the server
string hiddenFieldID = clientReference + "__hidden";
scriptOM.RegisterHiddenField(hiddenFieldID, String.Empty);
string startupScript = String.Format(CultureInfo.InvariantCulture, startupScriptFormat, clientReference, hiddenFieldID, doCallBackCall, PageIndex);
scriptOM.RegisterStartupScript(typeof(DetailsView), clientReference, startupScript, true);
}
}
private bool PageIsValidAfterModelException() {
if (_modelValidationGroup == null) {
return true;
}
Page.Validate(_modelValidationGroup);
return Page.IsValid;
}
///
/// Parses the information in the hidden field for callbacks and sets members to the values
/// in the hidden field. Returns whether properties changed from what was retrieved from controlstate.
///
private bool ParseHiddenFieldState(string state) {
string[] arguments = state.Split(new char[] {'|'});
if (arguments.Length == 2) {
return LoadHiddenFieldState(arguments[0], arguments[1]);
}
return false;
}
protected internal override void PerformDataBinding(IEnumerable data) {
base.PerformDataBinding(data);
if (IsBoundUsingDataSourceID && Mode == DetailsViewMode.Edit && IsViewStateEnabled) {
BoundFieldValues.Clear();
ExtractRowValues(BoundFieldValues, true/*includeReadOnlyFields*/, false/*includePrimaryKey*/);
}
}
///
///
protected internal virtual void PrepareControlHierarchy() {
// The order of rows is autogenerated data rows, declared rows, then autogenerated command rows
if (Controls.Count < 1) {
return;
}
Debug.Assert(Controls[0] is Table);
Table childTable = (Table)Controls[0];
childTable.CopyBaseAttributes(this);
if (ControlStyleCreated && !ControlStyle.IsEmpty) {
childTable.ApplyStyle(ControlStyle);
} else {
// Since we didn't create a ControlStyle yet, the default
// settings for the default style of the control need to be applied
// to the child table control directly
//
childTable.GridLines = GridLines.Both;
childTable.CellSpacing = 0;
}
childTable.Caption = Caption;
childTable.CaptionAlign = CaptionAlign;
// the composite alternating item style, so we need to do just one
// merge style on the actual item
Style altRowStyle = new TableItemStyle();
altRowStyle.CopyFrom(_rowStyle);
if (_alternatingRowStyle != null) {
altRowStyle = new TableItemStyle();
altRowStyle.CopyFrom(_alternatingRowStyle);
}
Style compositeStyle;
TableRowCollection rows = childTable.Rows;
foreach (DetailsViewRow row in rows) {
compositeStyle = new TableItemStyle();
DataControlRowState rowState = row.RowState;
DataControlRowType rowType = row.RowType;
DataControlFieldCell headerFieldCell = row.Cells[0] as DataControlFieldCell;
DataControlField field = null;
if (headerFieldCell != null) {
field = headerFieldCell.ContainingField;
}
switch (rowType) {
case DataControlRowType.Header:
compositeStyle = _headerStyle;
break;
case DataControlRowType.Footer:
compositeStyle = _footerStyle;
break;
case DataControlRowType.DataRow:
compositeStyle.CopyFrom(_rowStyle);
if ((rowState & DataControlRowState.Alternate) != 0) {
compositeStyle.CopyFrom(altRowStyle);
}
if (field is ButtonFieldBase) {
compositeStyle.CopyFrom(_commandRowStyle);
break;
}
if ((rowState & DataControlRowState.Edit) != 0) {
compositeStyle.CopyFrom(_editRowStyle);
}
if ((rowState & DataControlRowState.Insert) != 0) {
if (_insertRowStyle != null) {
compositeStyle.CopyFrom(_insertRowStyle);
}
else {
compositeStyle.CopyFrom(_editRowStyle);
}
}
break;
case DataControlRowType.Pager:
compositeStyle = _pagerStyle;
break;
case DataControlRowType.EmptyDataRow:
compositeStyle = _emptyDataRowStyle;
break;
}
if (compositeStyle != null && row.Visible) {
row.MergeStyle(compositeStyle);
}
if (rowType == DataControlRowType.DataRow && field != null) {
if (!field.Visible ||
(Mode == DetailsViewMode.Insert && !field.InsertVisible)) {
row.Visible = false;
}
else {
int contentCellIndex = 0;
DataControlFieldCell contentFieldCell = null;
if (headerFieldCell != null && headerFieldCell.ContainingField.ShowHeader) {
headerFieldCell.MergeStyle(field.HeaderStyleInternal);
headerFieldCell.MergeStyle(_fieldHeaderStyle);
contentCellIndex = 1;
}
contentFieldCell = row.Cells[contentCellIndex] as DataControlFieldCell;
if (contentFieldCell != null) {
contentFieldCell.MergeStyle(field.ItemStyleInternal);
}
foreach (Control control in contentFieldCell.Controls) {
WebControl webControl = control as WebControl;
Style fieldControlStyle = field.ControlStyleInternal;
if (webControl != null && fieldControlStyle != null && !fieldControlStyle.IsEmpty) {
webControl.ControlStyle.CopyFrom(fieldControlStyle);
}
}
}
}
}
}
protected virtual void RaiseCallbackEvent(string eventArgument) {
string[] arguments = eventArgument.Split(new char[] {'|'});
Debug.Assert((arguments != null && (arguments.Length == 4)), "An unexpected number of params came through");
ValidateEvent(UniqueID, "\"" + arguments[0] + "|" + arguments[1] + "\"");
LoadHiddenFieldState(arguments[2], arguments[3]);
int pageNumber = Int32.Parse(arguments[0], CultureInfo.InvariantCulture);
_pageIndex = pageNumber;
DataBind();
}
protected virtual void RaisePostBackEvent(string eventArgument) {
ValidateEvent(UniqueID, eventArgument);
int separatorIndex = eventArgument.IndexOf('$');
if (separatorIndex < 0) {
return;
}
CommandEventArgs cea = new CommandEventArgs(eventArgument.Substring(0, separatorIndex), eventArgument.Substring(separatorIndex + 1));
DetailsViewCommandEventArgs dvcea = new DetailsViewCommandEventArgs(this, cea);
HandleEvent(dvcea, false, String.Empty);
}
///
/// Displays the control on the client.
///
protected internal override void Render(HtmlTextWriter writer) {
// we don't render the outer div at design time because the designer surface
// needs a top-level layout element
Render(writer, !DesignMode);
}
private void Render(HtmlTextWriter writer, bool renderPanel) {
if (Page != null) {
Page.VerifyRenderingInServerForm(this);
}
PrepareControlHierarchy();
if (renderPanel) {
if (DetermineRenderClientScript()) {
string clientID = ClientID;
if (clientID == null) {
throw new HttpException(SR.GetString(SR.DetailsView_MustBeParented));
}
else {
StringBuilder clientPanelNameBuilder = new StringBuilder("__dv", 9 + clientID.Length);
clientPanelNameBuilder.Append(clientID);
clientPanelNameBuilder.Append("__div");
writer.AddAttribute(HtmlTextWriterAttribute.Id, clientPanelNameBuilder.ToString(), true);
}
}
writer.RenderBeginTag(HtmlTextWriterTag.Div);
}
RenderContents(writer);
if (renderPanel) {
writer.RenderEndTag();
}
}
private void RenderTableContents(HtmlTextWriter writer) {
Render(writer, false);
}
///
/// Saves the control state for those properties that should persist across postbacks
/// even when EnableViewState=false.
///
protected internal override object SaveControlState() {
object baseState = base.SaveControlState();
// LoadControlState won't get called if SaveControlState returned null. We need to restore
// values that are defaults but different from declarative property sets.
if (baseState != null ||
_pageIndex != 0 ||
_mode != _defaultMode ||
_defaultMode != DetailsViewMode.ReadOnly ||
(_dataKeyNames != null && _dataKeyNames.Length > 0) ||
(_keyTable != null && _keyTable.Count > 0) ||
_pageCount != 0) {
object[] state = new object[7];
object pageIndexState = null;
object modeState = null;
object defaultModeState = null;
object keyNamesState = null;
object keyTableState = null;
object pageCountState = null;
if (_pageIndex != 0) {
pageIndexState = _pageIndex;
}
if (_defaultMode != DetailsViewMode.ReadOnly) {
defaultModeState = (int)_defaultMode;
}
// Only save the mode if it's different from the DefaultMode. Otherwise, the Mode
// getter will restore it to the DefaultMode value.
if (_mode != _defaultMode && _modeSet) {
modeState = (int)_mode;
}
if (_dataKeyNames != null && _dataKeyNames.Length > 0) {
keyNamesState = _dataKeyNames;
}
if (_keyTable != null) {
keyTableState = OrderedDictionaryStateHelper.SaveViewState(_keyTable);
}
if (_pageCount != 0) {
pageCountState = _pageCount;
}
state[0] = baseState;
state[1] = pageIndexState;
state[2] = defaultModeState;
state[3] = modeState;
state[4] = keyNamesState;
state[5] = keyTableState;
state[6] = pageCountState;
return state;
}
return true; // return a dummy that ensures LoadControlState gets called but minimizes persisted size.
}
///
/// Saves the current state of the
///
protected override object SaveViewState() {
object baseState = base.SaveViewState();
object pagerStyleState = (_pagerStyle != null) ? ((IStateManager)_pagerStyle).SaveViewState() : null;
object headerStyleState = (_headerStyle != null) ? ((IStateManager)_headerStyle).SaveViewState() : null;
object footerStyleState = (_footerStyle != null) ? ((IStateManager)_footerStyle).SaveViewState() : null;
object rowStyleState = (_rowStyle != null) ? ((IStateManager)_rowStyle).SaveViewState() : null;
object alternatingRowStyleState = (_alternatingRowStyle != null) ? ((IStateManager)_alternatingRowStyle).SaveViewState() : null;
object commandRowStyleState = (_commandRowStyle != null) ? ((IStateManager)_commandRowStyle).SaveViewState() : null;
object editRowStyleState = (_editRowStyle != null) ? ((IStateManager)_editRowStyle).SaveViewState() : null;
object insertRowStyleState = (_insertRowStyle != null) ? ((IStateManager)_insertRowStyle).SaveViewState() : null;
object fieldHeaderStyleState = (_fieldHeaderStyle != null) ? ((IStateManager)_fieldHeaderStyle).SaveViewState() : null;
object fieldsState = (_fieldCollection != null) ? ((IStateManager)_fieldCollection).SaveViewState() : null;
object boundFieldValuesState = (_boundFieldValues != null) ? OrderedDictionaryStateHelper.SaveViewState(_boundFieldValues) : null;
object pagerSettingsState = (_pagerSettings != null) ? ((IStateManager)_pagerSettings).SaveViewState() : null;
object controlState = ControlStyleCreated ? ((IStateManager)ControlStyle).SaveViewState() : null;
object autoGenFieldState = null;
if (_autoGenFieldProps != null) {
int autoGenFieldPropsCount = _autoGenFieldProps.Count;
object[] o = new object[autoGenFieldPropsCount];
for (int i = 0; i < autoGenFieldPropsCount; i++) {
o[i] = ((IStateManager)_autoGenFieldProps[i]).SaveViewState();
}
autoGenFieldState = o;
}
object[] myState = new object[15];
myState[0] = baseState;
myState[1] = pagerStyleState;
myState[2] = headerStyleState;
myState[3] = footerStyleState;
myState[4] = rowStyleState;
myState[5] = alternatingRowStyleState;
myState[6] = commandRowStyleState;
myState[7] = editRowStyleState;
myState[8] = insertRowStyleState;
myState[9] = fieldHeaderStyleState;
myState[10] = fieldsState;
myState[11] = boundFieldValuesState;
myState[12] = pagerSettingsState;
myState[13] = controlState;
myState[14] = autoGenFieldState;
//
return myState;
}
private void SelectCallback(IEnumerable data) {
// The data source should have thrown. If we're here, it didn't. We'll throw for it
// with a generic message.
throw new HttpException(SR.GetString(SR.DataBoundControl_DataSourceDoesntSupportPaging));
}
///
/// Marks the starting point to begin tracking and saving changes to the
/// control as part of the control viewstate.
///
protected override void TrackViewState() {
base.TrackViewState();
if (_fieldCollection != null)
((IStateManager)_fieldCollection).TrackViewState();
if (_pagerStyle != null)
((IStateManager)_pagerStyle).TrackViewState();
if (_headerStyle != null)
((IStateManager)_headerStyle).TrackViewState();
if (_footerStyle != null)
((IStateManager)_footerStyle).TrackViewState();
if (_rowStyle != null)
((IStateManager)_rowStyle).TrackViewState();
if (_alternatingRowStyle != null)
((IStateManager)_alternatingRowStyle).TrackViewState();
if (_commandRowStyle != null)
((IStateManager)_commandRowStyle).TrackViewState();
if (_editRowStyle != null)
((IStateManager)_editRowStyle).TrackViewState();
if (_insertRowStyle != null)
((IStateManager)_insertRowStyle).TrackViewState();
if (_pagerSettings != null)
((IStateManager)_pagerSettings).TrackViewState();
if (ControlStyleCreated)
((IStateManager)ControlStyle).TrackViewState();
}
public virtual void UpdateItem(bool causesValidation) {
HandleUpdate(String.Empty, causesValidation);
}
#region IPostBackEventHandler implementation
void IPostBackEventHandler.RaisePostBackEvent(string eventArgument) {
RaisePostBackEvent(eventArgument);
}
#endregion
#region IPostBackContainer implementation
PostBackOptions IPostBackContainer.GetPostBackOptions(IButtonControl buttonControl) {
if (buttonControl == null) {
throw new ArgumentNullException("buttonControl");
}
if (buttonControl.CausesValidation) {
throw new InvalidOperationException(SR.GetString(SR.CannotUseParentPostBackWhenValidating, this.GetType().Name, ID));
}
PostBackOptions options = new PostBackOptions(this, (buttonControl.CommandName + "$" + buttonControl.CommandArgument));
options.RequiresJavaScriptProtocol = true;
return options;
}
#endregion
#region ICallbackContainer implementation
string ICallbackContainer.GetCallbackScript(IButtonControl buttonControl, string argument) {
return GetCallbackScript(buttonControl, argument);
}
#endregion
#region ICallbackEventHandler implementation
void ICallbackEventHandler.RaiseCallbackEvent(string eventArgument) {
RaiseCallbackEvent(eventArgument);
}
// The return value of this function is the argument to the callback handler in
// GetCallbackEventReference.
string ICallbackEventHandler.GetCallbackResult() {
return GetCallbackResult();
}
#endregion
#region IDataItemContainer implementation
int IDataItemContainer.DataItemIndex {
get {
return DataItemIndex;
}
}
int IDataItemContainer.DisplayIndex {
get {
return 0;
}
}
#endregion
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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- RuleProcessor.cs
- GridSplitterAutomationPeer.cs
- ConfigXmlText.cs
- DesignerAttribute.cs
- PathFigureCollection.cs
- ContextMenuService.cs
- FlowDocumentReader.cs
- MethodExpr.cs
- SuppressIldasmAttribute.cs
- JavaScriptString.cs
- Query.cs
- CultureMapper.cs
- SQLInt16.cs
- WorkItem.cs
- IApplicationTrustManager.cs
- SourceElementsCollection.cs
- BitmapCodecInfoInternal.cs
- TextClipboardData.cs
- GatewayIPAddressInformationCollection.cs
- ICspAsymmetricAlgorithm.cs
- Line.cs
- CodeMemberProperty.cs
- DecoderNLS.cs
- RepeatButton.cs
- Matrix.cs
- RepeatEnumerable.cs
- PageSetupDialog.cs
- ThreadExceptionEvent.cs
- XmlDictionaryString.cs
- Misc.cs
- X509CertificateRecipientServiceCredential.cs
- HTTPNotFoundHandler.cs
- SmtpLoginAuthenticationModule.cs
- LicenseProviderAttribute.cs
- WindowsStartMenu.cs
- Array.cs
- SqlAliaser.cs
- EndpointConfigContainer.cs
- PieceNameHelper.cs
- WebExceptionStatus.cs
- Crypto.cs
- InplaceBitmapMetadataWriter.cs
- AnnotationComponentManager.cs
- SplashScreen.cs
- CodeDOMProvider.cs
- ToolStripComboBox.cs
- RoutingBehavior.cs
- BitmapEffectCollection.cs
- Compiler.cs
- Run.cs
- FixedTextView.cs
- SchemaImporterExtensionsSection.cs
- BrowserCapabilitiesFactory35.cs
- Domain.cs
- HtmlInputControl.cs
- TCEAdapterGenerator.cs
- XPathNodeInfoAtom.cs
- IIS7ConfigurationLoader.cs
- OleAutBinder.cs
- SingleStorage.cs
- TriState.cs
- SmiEventSink_DeferedProcessing.cs
- MsdtcClusterUtils.cs
- UpdatableGenericsFeature.cs
- TextBoxBase.cs
- DurationConverter.cs
- MetadataSerializer.cs
- HtmlButton.cs
- TreeView.cs
- ProcessInputEventArgs.cs
- GACIdentityPermission.cs
- ScrollBar.cs
- ConcatQueryOperator.cs
- PrimitiveSchema.cs
- CheckBoxStandardAdapter.cs
- LogRestartAreaEnumerator.cs
- SmtpFailedRecipientsException.cs
- TextDecoration.cs
- RuntimeIdentifierPropertyAttribute.cs
- ExpressionEditorAttribute.cs
- FilterableAttribute.cs
- HtmlInputControl.cs
- Regex.cs
- Figure.cs
- PerformanceCountersElement.cs
- filewebrequest.cs
- Repeater.cs
- WebEventTraceProvider.cs
- HtmlEmptyTagControlBuilder.cs
- CreateUserWizard.cs
- Accessible.cs
- OutputScopeManager.cs
- FileChangesMonitor.cs
- StorageFunctionMapping.cs
- StorageMappingItemCollection.cs
- TypefaceMap.cs
- HttpApplicationFactory.cs
- BCryptHashAlgorithm.cs
- ImmComposition.cs
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