Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / xsp / System / Web / UI / WebControls / CheckBoxList.cs / 1 / CheckBoxList.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.Globalization;
using System.Security.Permissions;
using System.Web;
using System.Web.UI;
///
/// Creates a group of
///
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public class CheckBoxList : ListControl, IRepeatInfoUser, INamingContainer, IPostBackDataHandler
#if ORCAS
,IItemPaginationInfo, IPaginationContainer
#endif
{
private CheckBox _controlToRepeat;
private string _oldAccessKey;
private bool _hasNotifiedOfChange;
private bool _cachedRegisterEnabled;
private bool _cachedIsEnabled;
#if ORCAS
private int _offset;
private int _itemCount = -1;
private int _previousOffset;
private int _previousItemCount;
#endif
///
///
/// Initializes a new instance of the
///
public CheckBoxList() {
#if ORCAS
_offset = 0;
_itemCount = -1;
_previousOffset = 0;
_previousItemCount = -1;
#endif
_controlToRepeat = new CheckBox();
_controlToRepeat.EnableViewState = false;
// Whidbey 28457: We need to set a default numeric ID for the case
// of an empty checkbox list. It is because the child CheckBox
// always registers itself to Page as a PostBackData control and
// during postback it will invoke LoadPostData in this class and the
// method always assumes the ID is numeric. This default ID setting
// has been done in this way since V1.
_controlToRepeat.ID = "0";
Controls.Add(_controlToRepeat);
}
///
///
/// Gets or sets
/// the padding between each item.
///
///
[
WebCategory("Layout"),
DefaultValue(-1),
WebSysDescription(SR.CheckBoxList_CellPadding)
]
public virtual int CellPadding {
get {
if (ControlStyleCreated == false) {
return -1;
}
return ((TableStyle)ControlStyle).CellPadding;
}
set {
((TableStyle)ControlStyle).CellPadding = value;
}
}
///
///
/// Gets or sets
/// the spacing between each item.
///
///
[
WebCategory("Layout"),
DefaultValue(-1),
WebSysDescription(SR.CheckBoxList_CellSpacing)
]
public virtual int CellSpacing {
get {
if (ControlStyleCreated == false) {
return -1;
}
return ((TableStyle)ControlStyle).CellSpacing;
}
set {
((TableStyle)ControlStyle).CellSpacing = value;
}
}
internal override bool IsMultiSelectInternal {
get {
// a CheckBoxList is always multiselect.
return true;
}
}
///
/// Gets or sets the number of columns to repeat.
///
[
WebCategory("Layout"),
DefaultValue(0),
WebSysDescription(SR.CheckBoxList_RepeatColumns)
]
public virtual int RepeatColumns {
get {
object o = ViewState["RepeatColumns"];
return((o == null) ? 0 : (int)o);
}
set {
if (value < 0) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["RepeatColumns"] = value;
}
}
///
/// Gets or sets a value that indicates whether the control is displayed
/// vertically or horizontally.
///
[
WebCategory("Layout"),
DefaultValue(RepeatDirection.Vertical),
WebSysDescription(SR.Item_RepeatDirection)
]
public virtual RepeatDirection RepeatDirection {
get {
object o = ViewState["RepeatDirection"];
return((o == null) ? RepeatDirection.Vertical : (RepeatDirection)o);
}
set {
if (value < RepeatDirection.Horizontal || value > RepeatDirection.Vertical) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["RepeatDirection"] = value;
}
}
///
/// Gets or sets a value that indicates whether the control is displayed in
///
///
[
WebCategory("Layout"),
DefaultValue(RepeatLayout.Table),
WebSysDescription(SR.WebControl_RepeatLayout)
]
public virtual RepeatLayout RepeatLayout {
get {
object o = ViewState["RepeatLayout"];
return((o == null) ? RepeatLayout.Table : (RepeatLayout)o);
}
set {
if (value < RepeatLayout.Table || value > RepeatLayout.Flow) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["RepeatLayout"] = value;
}
}
///
/// Gets or sets
/// the alignment of the text label associated with each checkbox.
///
[
WebCategory("Appearance"),
DefaultValue(TextAlign.Right),
WebSysDescription(SR.WebControl_TextAlign)
]
public virtual TextAlign TextAlign {
get {
object align = ViewState["TextAlign"];
return((align == null) ? TextAlign.Right : (TextAlign)align);
}
set {
if (value < TextAlign.Left || value > TextAlign.Right) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["TextAlign"] = value;
}
}
///
/// Creates a new control style object.
///
protected override Style CreateControlStyle() {
return new TableStyle(ViewState);
}
///
/// Catches post data for each
///
protected override Control FindControl(string id, int pathOffset) {
return this;
}
#if ORCAS
///
/// Loads the control state for those properties that should persist across postbacks
/// even when EnableViewState=false.
///
protected internal override void LoadControlState(object savedState) {
Triplet state = (Triplet)savedState;
if (state != null && state.First != null) {
base.LoadControlState(state.First);
}
else {
base.LoadControlState(null);
}
if (state != null && state.Second != null && state.Third != null) {
_previousOffset = (int)state.Second;
_previousItemCount = (int)state.Third;
}
else {
_previousOffset = 0;
_previousItemCount = -1;
}
}
#endif
///
/// Configures the
///
protected internal override void OnPreRender(EventArgs e) {
base.OnPreRender(e);
_controlToRepeat.AutoPostBack = AutoPostBack;
_controlToRepeat.CausesValidation = CausesValidation;
_controlToRepeat.ValidationGroup = ValidationGroup;
if (Page != null) {
// ensure postback data for those checkboxes which get unchecked or are different from their default value
for (int i=0; i < Items.Count; i++) {
_controlToRepeat.ID = i.ToString(NumberFormatInfo.InvariantInfo);
Page.RegisterRequiresPostBack(_controlToRepeat);
}
}
}
///
///
/// Displays the
///
protected internal override void Render(HtmlTextWriter writer) {
#if ORCAS
// Don't render anything if the control is empty.
// empty table is not xhtml compliant.
if (VisibleItemCount == 0) {
return;
}
#else
// Don't render anything if the control is empty.
// empty table is not xhtml compliant.
if (Items.Count == 0 && !EnableLegacyRendering) {
return;
}
#endif
RepeatInfo repeatInfo = new RepeatInfo();
Style style = (ControlStyleCreated ? ControlStyle : null);
short tabIndex = TabIndex;
bool undirtyTabIndex = false;
// TabIndex here is special... it needs to be applied to the individual
// checkboxes and not the outer control itself
// Set the TextAlign property.
_controlToRepeat.TextAlign = TextAlign;
// cache away the TabIndex property state
_controlToRepeat.TabIndex = tabIndex;
if (tabIndex != 0) {
if (ViewState.IsItemDirty("TabIndex") == false) {
undirtyTabIndex = true;
}
TabIndex = 0;
}
repeatInfo.RepeatColumns = RepeatColumns;
repeatInfo.RepeatDirection = RepeatDirection;
// If the device does not support tables, use the flow layout to render
if (!DesignMode && !Context.Request.Browser.Tables) {
repeatInfo.RepeatLayout = RepeatLayout.Flow;
}
else {
repeatInfo.RepeatLayout = RepeatLayout;
}
if (repeatInfo.RepeatLayout == RepeatLayout.Flow) {
repeatInfo.EnableLegacyRendering = EnableLegacyRendering;
}
// VSWhidbey 373655
// Temporarily suppress AccessKey so base does not render it on the outside tag
_oldAccessKey = AccessKey;
AccessKey = String.Empty;
repeatInfo.RenderRepeater(writer, (IRepeatInfoUser)this, style, this);
// restore the state of AccessKey property
AccessKey = _oldAccessKey;
// restore the state of the TabIndex property
if (tabIndex != 0) {
TabIndex = tabIndex;
}
if (undirtyTabIndex) {
ViewState.SetItemDirty("TabIndex", false);
}
}
#if ORCAS
///
/// 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();
if (baseState != null || _itemCount != -1) {
return new Triplet(baseState, _offset, _itemCount);
}
return null;
}
#region IItemPaginationInfo implementation
int IItemPaginationInfo.FirstVisibleItemIndex {
get {
return this.FirstVisibleItemIndex;
}
}
protected int FirstVisibleItemIndex {
get {
return _offset;
}
}
///
///
/// The number of items held by the container for pagination calculations.
///
///
int IItemPaginationInfo.ItemCount {
get {
return ItemCount;
}
}
///
///
/// The number of items held by the container for pagination calculations.
///
///
protected virtual int ItemCount {
get {
EnsureDataBound();
return Items.Count;
}
}
///
///
/// The weight for pagination calculations for each item of the container.
/// Returns a constant value of 100 for CheckBoxList.
///
///
int IItemPaginationInfo.ItemWeight {
get {
return ItemWeight;
}
}
///
///
/// The weight for pagination calculations for each item of the container.
/// Returns a constant value of 100 for CheckBoxList.
///
///
protected virtual int ItemWeight {
get {
return 100;
}
}
int IItemPaginationInfo.VisibleItemCount {
get {
return this.VisibleItemCount;
}
}
protected int VisibleItemCount {
get {
if (_itemCount >= 0) {
return _itemCount;
}
else {
return ItemCount;
}
}
}
///
///
/// Indicates which child items of the container are visible on the current page.
///
///
void IItemPaginationInfo.SetVisibleItems(int firstItem, int itemCount) {
SetVisibleItems(firstItem, itemCount);
}
///
///
/// Indicates which child items of the container are visible on the current page.
///
///
protected virtual void SetVisibleItems(int firstItem, int itemCount) {
_offset = firstItem;
_itemCount = itemCount;
// This info will be saved into ControlState so that
// the list remembers which page it was on when treating postbacks
}
#endregion
#endif
///
/// Processes posted data for the
///
bool IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) {
return LoadPostData(postDataKey, postCollection);
}
///
/// Processes posted data for the
///
protected virtual bool LoadPostData(String postDataKey, NameValueCollection postCollection) {
if (IsEnabled == false) {
// When a CheckBoxList is disabled, then there is no postback
// data for it. Any checked state information has been loaded
// via view state.
return false;
}
string strIndex = postDataKey.Substring(UniqueID.Length + 1);
int index = Int32.Parse(strIndex, CultureInfo.InvariantCulture);
EnsureDataBound();
#if ORCAS
// Do not maintain state from the form if the current page changed.
if (_previousItemCount != -1 && (index < _previousOffset || index >= _previousOffset + _previousItemCount)) {
return false;
}
#endif
// Maintain state from the form
if (index >= 0 && index < Items.Count) {
ListItem item = Items[index];
if (item.Enabled == false) {
return false;
}
bool newCheckState = (postCollection[postDataKey] != null);
if (item.Selected != newCheckState) {
item.Selected = newCheckState;
// LoadPostData will be invoked for each CheckBox that changed
// Suppress multiple change notification and fire only ONE change event
if (!_hasNotifiedOfChange) {
_hasNotifiedOfChange = true;
return true;
}
}
}
return false;
}
///
/// Raises when posted data for a control has changed.
///
void IPostBackDataHandler.RaisePostDataChangedEvent() {
RaisePostDataChangedEvent();
}
///
/// Raises when posted data for a control has changed.
///
protected virtual void RaisePostDataChangedEvent() {
if (AutoPostBack && !Page.IsPostBackEventControlRegistered) {
// VSWhidbey 204824
Page.AutoPostBackControl = this;
if (CausesValidation) {
Page.Validate(ValidationGroup);
}
}
OnSelectedIndexChanged(EventArgs.Empty);
}
///
///
bool IRepeatInfoUser.HasFooter {
get {
return HasFooter;
}
}
///
///
protected virtual bool HasFooter {
get {
return false;
}
}
///
///
bool IRepeatInfoUser.HasHeader {
get {
return HasHeader;
}
}
///
///
protected virtual bool HasHeader {
get {
return false;
}
}
///
///
bool IRepeatInfoUser.HasSeparators {
get {
return HasSeparators;
}
}
///
///
protected virtual bool HasSeparators {
get {
return false;
}
}
///
///
int IRepeatInfoUser.RepeatedItemCount {
get {
return RepeatedItemCount;
}
}
///
///
protected virtual int RepeatedItemCount {
get {
#if ORCAS
// If the whole control is contained on a single page,
// the count is the number of items.
if (VirtualStartPage == VirtualEndPage || _itemCount == -1) {
return (Items != null) ? Items.Count : 0;
}
return _itemCount;
#else
return (Items != null) ? Items.Count : 0;
#endif
}
}
///
///
Style IRepeatInfoUser.GetItemStyle(ListItemType itemType, int repeatIndex) {
return GetItemStyle(itemType, repeatIndex);
}
protected virtual Style GetItemStyle(ListItemType itemType, int repeatIndex) {
return null;
}
///
/// Called by the RepeatInfo helper to render each item
///
void IRepeatInfoUser.RenderItem(ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer) {
RenderItem(itemType, repeatIndex, repeatInfo, writer);
}
///
/// Called by the RepeatInfo helper to render each item
///
protected virtual void RenderItem(ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer) {
if (repeatIndex == 0) {
_cachedIsEnabled = IsEnabled;
_cachedRegisterEnabled = (Page != null) && IsEnabled && (SaveSelectedIndicesViewState == false);
}
#if ORCAS
int repeatIndexOffset = repeatIndex + _offset;
#else
int repeatIndexOffset = repeatIndex;
#endif
ListItem item = Items[repeatIndexOffset];
// VSWhidbey 403433 Render expando attributes.
_controlToRepeat.Attributes.Clear();
if (item.HasAttributes) {
foreach (string key in item.Attributes.Keys) {
_controlToRepeat.Attributes[key] = item.Attributes[key];
}
}
_controlToRepeat.ID = repeatIndexOffset.ToString(NumberFormatInfo.InvariantInfo);
_controlToRepeat.Text = item.Text;
_controlToRepeat.Checked = item.Selected;
_controlToRepeat.Enabled = _cachedIsEnabled && item.Enabled;
_controlToRepeat.AccessKey = _oldAccessKey;
if (_cachedRegisterEnabled && _controlToRepeat.Enabled) {
// Store a client-side array of enabled control, so we can re-enable them on
// postback (in case they are disabled client-side)
// Postback is needed when SelectedIndices is not saved in view state
Page.RegisterEnabledControl(_controlToRepeat);
}
_controlToRepeat.RenderControl(writer);
}
#if ORCAS
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public virtual int MaximumWeight {
get {
if (Page != null && Page.Form != null) {
return Page.Form.MaximumWeight;
}
return 0;
}
}
#endif
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// 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.Globalization;
using System.Security.Permissions;
using System.Web;
using System.Web.UI;
///
/// Creates a group of
///
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public class CheckBoxList : ListControl, IRepeatInfoUser, INamingContainer, IPostBackDataHandler
#if ORCAS
,IItemPaginationInfo, IPaginationContainer
#endif
{
private CheckBox _controlToRepeat;
private string _oldAccessKey;
private bool _hasNotifiedOfChange;
private bool _cachedRegisterEnabled;
private bool _cachedIsEnabled;
#if ORCAS
private int _offset;
private int _itemCount = -1;
private int _previousOffset;
private int _previousItemCount;
#endif
///
///
/// Initializes a new instance of the
///
public CheckBoxList() {
#if ORCAS
_offset = 0;
_itemCount = -1;
_previousOffset = 0;
_previousItemCount = -1;
#endif
_controlToRepeat = new CheckBox();
_controlToRepeat.EnableViewState = false;
// Whidbey 28457: We need to set a default numeric ID for the case
// of an empty checkbox list. It is because the child CheckBox
// always registers itself to Page as a PostBackData control and
// during postback it will invoke LoadPostData in this class and the
// method always assumes the ID is numeric. This default ID setting
// has been done in this way since V1.
_controlToRepeat.ID = "0";
Controls.Add(_controlToRepeat);
}
///
///
/// Gets or sets
/// the padding between each item.
///
///
[
WebCategory("Layout"),
DefaultValue(-1),
WebSysDescription(SR.CheckBoxList_CellPadding)
]
public virtual int CellPadding {
get {
if (ControlStyleCreated == false) {
return -1;
}
return ((TableStyle)ControlStyle).CellPadding;
}
set {
((TableStyle)ControlStyle).CellPadding = value;
}
}
///
///
/// Gets or sets
/// the spacing between each item.
///
///
[
WebCategory("Layout"),
DefaultValue(-1),
WebSysDescription(SR.CheckBoxList_CellSpacing)
]
public virtual int CellSpacing {
get {
if (ControlStyleCreated == false) {
return -1;
}
return ((TableStyle)ControlStyle).CellSpacing;
}
set {
((TableStyle)ControlStyle).CellSpacing = value;
}
}
internal override bool IsMultiSelectInternal {
get {
// a CheckBoxList is always multiselect.
return true;
}
}
///
/// Gets or sets the number of columns to repeat.
///
[
WebCategory("Layout"),
DefaultValue(0),
WebSysDescription(SR.CheckBoxList_RepeatColumns)
]
public virtual int RepeatColumns {
get {
object o = ViewState["RepeatColumns"];
return((o == null) ? 0 : (int)o);
}
set {
if (value < 0) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["RepeatColumns"] = value;
}
}
///
/// Gets or sets a value that indicates whether the control is displayed
/// vertically or horizontally.
///
[
WebCategory("Layout"),
DefaultValue(RepeatDirection.Vertical),
WebSysDescription(SR.Item_RepeatDirection)
]
public virtual RepeatDirection RepeatDirection {
get {
object o = ViewState["RepeatDirection"];
return((o == null) ? RepeatDirection.Vertical : (RepeatDirection)o);
}
set {
if (value < RepeatDirection.Horizontal || value > RepeatDirection.Vertical) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["RepeatDirection"] = value;
}
}
///
/// Gets or sets a value that indicates whether the control is displayed in
///
///
[
WebCategory("Layout"),
DefaultValue(RepeatLayout.Table),
WebSysDescription(SR.WebControl_RepeatLayout)
]
public virtual RepeatLayout RepeatLayout {
get {
object o = ViewState["RepeatLayout"];
return((o == null) ? RepeatLayout.Table : (RepeatLayout)o);
}
set {
if (value < RepeatLayout.Table || value > RepeatLayout.Flow) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["RepeatLayout"] = value;
}
}
///
/// Gets or sets
/// the alignment of the text label associated with each checkbox.
///
[
WebCategory("Appearance"),
DefaultValue(TextAlign.Right),
WebSysDescription(SR.WebControl_TextAlign)
]
public virtual TextAlign TextAlign {
get {
object align = ViewState["TextAlign"];
return((align == null) ? TextAlign.Right : (TextAlign)align);
}
set {
if (value < TextAlign.Left || value > TextAlign.Right) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["TextAlign"] = value;
}
}
///
/// Creates a new control style object.
///
protected override Style CreateControlStyle() {
return new TableStyle(ViewState);
}
///
/// Catches post data for each
///
protected override Control FindControl(string id, int pathOffset) {
return this;
}
#if ORCAS
///
/// Loads the control state for those properties that should persist across postbacks
/// even when EnableViewState=false.
///
protected internal override void LoadControlState(object savedState) {
Triplet state = (Triplet)savedState;
if (state != null && state.First != null) {
base.LoadControlState(state.First);
}
else {
base.LoadControlState(null);
}
if (state != null && state.Second != null && state.Third != null) {
_previousOffset = (int)state.Second;
_previousItemCount = (int)state.Third;
}
else {
_previousOffset = 0;
_previousItemCount = -1;
}
}
#endif
///
/// Configures the
///
protected internal override void OnPreRender(EventArgs e) {
base.OnPreRender(e);
_controlToRepeat.AutoPostBack = AutoPostBack;
_controlToRepeat.CausesValidation = CausesValidation;
_controlToRepeat.ValidationGroup = ValidationGroup;
if (Page != null) {
// ensure postback data for those checkboxes which get unchecked or are different from their default value
for (int i=0; i < Items.Count; i++) {
_controlToRepeat.ID = i.ToString(NumberFormatInfo.InvariantInfo);
Page.RegisterRequiresPostBack(_controlToRepeat);
}
}
}
///
///
/// Displays the
///
protected internal override void Render(HtmlTextWriter writer) {
#if ORCAS
// Don't render anything if the control is empty.
// empty table is not xhtml compliant.
if (VisibleItemCount == 0) {
return;
}
#else
// Don't render anything if the control is empty.
// empty table is not xhtml compliant.
if (Items.Count == 0 && !EnableLegacyRendering) {
return;
}
#endif
RepeatInfo repeatInfo = new RepeatInfo();
Style style = (ControlStyleCreated ? ControlStyle : null);
short tabIndex = TabIndex;
bool undirtyTabIndex = false;
// TabIndex here is special... it needs to be applied to the individual
// checkboxes and not the outer control itself
// Set the TextAlign property.
_controlToRepeat.TextAlign = TextAlign;
// cache away the TabIndex property state
_controlToRepeat.TabIndex = tabIndex;
if (tabIndex != 0) {
if (ViewState.IsItemDirty("TabIndex") == false) {
undirtyTabIndex = true;
}
TabIndex = 0;
}
repeatInfo.RepeatColumns = RepeatColumns;
repeatInfo.RepeatDirection = RepeatDirection;
// If the device does not support tables, use the flow layout to render
if (!DesignMode && !Context.Request.Browser.Tables) {
repeatInfo.RepeatLayout = RepeatLayout.Flow;
}
else {
repeatInfo.RepeatLayout = RepeatLayout;
}
if (repeatInfo.RepeatLayout == RepeatLayout.Flow) {
repeatInfo.EnableLegacyRendering = EnableLegacyRendering;
}
// VSWhidbey 373655
// Temporarily suppress AccessKey so base does not render it on the outside tag
_oldAccessKey = AccessKey;
AccessKey = String.Empty;
repeatInfo.RenderRepeater(writer, (IRepeatInfoUser)this, style, this);
// restore the state of AccessKey property
AccessKey = _oldAccessKey;
// restore the state of the TabIndex property
if (tabIndex != 0) {
TabIndex = tabIndex;
}
if (undirtyTabIndex) {
ViewState.SetItemDirty("TabIndex", false);
}
}
#if ORCAS
///
/// 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();
if (baseState != null || _itemCount != -1) {
return new Triplet(baseState, _offset, _itemCount);
}
return null;
}
#region IItemPaginationInfo implementation
int IItemPaginationInfo.FirstVisibleItemIndex {
get {
return this.FirstVisibleItemIndex;
}
}
protected int FirstVisibleItemIndex {
get {
return _offset;
}
}
///
///
/// The number of items held by the container for pagination calculations.
///
///
int IItemPaginationInfo.ItemCount {
get {
return ItemCount;
}
}
///
///
/// The number of items held by the container for pagination calculations.
///
///
protected virtual int ItemCount {
get {
EnsureDataBound();
return Items.Count;
}
}
///
///
/// The weight for pagination calculations for each item of the container.
/// Returns a constant value of 100 for CheckBoxList.
///
///
int IItemPaginationInfo.ItemWeight {
get {
return ItemWeight;
}
}
///
///
/// The weight for pagination calculations for each item of the container.
/// Returns a constant value of 100 for CheckBoxList.
///
///
protected virtual int ItemWeight {
get {
return 100;
}
}
int IItemPaginationInfo.VisibleItemCount {
get {
return this.VisibleItemCount;
}
}
protected int VisibleItemCount {
get {
if (_itemCount >= 0) {
return _itemCount;
}
else {
return ItemCount;
}
}
}
///
///
/// Indicates which child items of the container are visible on the current page.
///
///
void IItemPaginationInfo.SetVisibleItems(int firstItem, int itemCount) {
SetVisibleItems(firstItem, itemCount);
}
///
///
/// Indicates which child items of the container are visible on the current page.
///
///
protected virtual void SetVisibleItems(int firstItem, int itemCount) {
_offset = firstItem;
_itemCount = itemCount;
// This info will be saved into ControlState so that
// the list remembers which page it was on when treating postbacks
}
#endregion
#endif
///
/// Processes posted data for the
///
bool IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) {
return LoadPostData(postDataKey, postCollection);
}
///
/// Processes posted data for the
///
protected virtual bool LoadPostData(String postDataKey, NameValueCollection postCollection) {
if (IsEnabled == false) {
// When a CheckBoxList is disabled, then there is no postback
// data for it. Any checked state information has been loaded
// via view state.
return false;
}
string strIndex = postDataKey.Substring(UniqueID.Length + 1);
int index = Int32.Parse(strIndex, CultureInfo.InvariantCulture);
EnsureDataBound();
#if ORCAS
// Do not maintain state from the form if the current page changed.
if (_previousItemCount != -1 && (index < _previousOffset || index >= _previousOffset + _previousItemCount)) {
return false;
}
#endif
// Maintain state from the form
if (index >= 0 && index < Items.Count) {
ListItem item = Items[index];
if (item.Enabled == false) {
return false;
}
bool newCheckState = (postCollection[postDataKey] != null);
if (item.Selected != newCheckState) {
item.Selected = newCheckState;
// LoadPostData will be invoked for each CheckBox that changed
// Suppress multiple change notification and fire only ONE change event
if (!_hasNotifiedOfChange) {
_hasNotifiedOfChange = true;
return true;
}
}
}
return false;
}
///
/// Raises when posted data for a control has changed.
///
void IPostBackDataHandler.RaisePostDataChangedEvent() {
RaisePostDataChangedEvent();
}
///
/// Raises when posted data for a control has changed.
///
protected virtual void RaisePostDataChangedEvent() {
if (AutoPostBack && !Page.IsPostBackEventControlRegistered) {
// VSWhidbey 204824
Page.AutoPostBackControl = this;
if (CausesValidation) {
Page.Validate(ValidationGroup);
}
}
OnSelectedIndexChanged(EventArgs.Empty);
}
///
///
bool IRepeatInfoUser.HasFooter {
get {
return HasFooter;
}
}
///
///
protected virtual bool HasFooter {
get {
return false;
}
}
///
///
bool IRepeatInfoUser.HasHeader {
get {
return HasHeader;
}
}
///
///
protected virtual bool HasHeader {
get {
return false;
}
}
///
///
bool IRepeatInfoUser.HasSeparators {
get {
return HasSeparators;
}
}
///
///
protected virtual bool HasSeparators {
get {
return false;
}
}
///
///
int IRepeatInfoUser.RepeatedItemCount {
get {
return RepeatedItemCount;
}
}
///
///
protected virtual int RepeatedItemCount {
get {
#if ORCAS
// If the whole control is contained on a single page,
// the count is the number of items.
if (VirtualStartPage == VirtualEndPage || _itemCount == -1) {
return (Items != null) ? Items.Count : 0;
}
return _itemCount;
#else
return (Items != null) ? Items.Count : 0;
#endif
}
}
///
///
Style IRepeatInfoUser.GetItemStyle(ListItemType itemType, int repeatIndex) {
return GetItemStyle(itemType, repeatIndex);
}
protected virtual Style GetItemStyle(ListItemType itemType, int repeatIndex) {
return null;
}
///
/// Called by the RepeatInfo helper to render each item
///
void IRepeatInfoUser.RenderItem(ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer) {
RenderItem(itemType, repeatIndex, repeatInfo, writer);
}
///
/// Called by the RepeatInfo helper to render each item
///
protected virtual void RenderItem(ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer) {
if (repeatIndex == 0) {
_cachedIsEnabled = IsEnabled;
_cachedRegisterEnabled = (Page != null) && IsEnabled && (SaveSelectedIndicesViewState == false);
}
#if ORCAS
int repeatIndexOffset = repeatIndex + _offset;
#else
int repeatIndexOffset = repeatIndex;
#endif
ListItem item = Items[repeatIndexOffset];
// VSWhidbey 403433 Render expando attributes.
_controlToRepeat.Attributes.Clear();
if (item.HasAttributes) {
foreach (string key in item.Attributes.Keys) {
_controlToRepeat.Attributes[key] = item.Attributes[key];
}
}
_controlToRepeat.ID = repeatIndexOffset.ToString(NumberFormatInfo.InvariantInfo);
_controlToRepeat.Text = item.Text;
_controlToRepeat.Checked = item.Selected;
_controlToRepeat.Enabled = _cachedIsEnabled && item.Enabled;
_controlToRepeat.AccessKey = _oldAccessKey;
if (_cachedRegisterEnabled && _controlToRepeat.Enabled) {
// Store a client-side array of enabled control, so we can re-enable them on
// postback (in case they are disabled client-side)
// Postback is needed when SelectedIndices is not saved in view state
Page.RegisterEnabledControl(_controlToRepeat);
}
_controlToRepeat.RenderControl(writer);
}
#if ORCAS
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public virtual int MaximumWeight {
get {
if (Page != null && Page.Form != null) {
return Page.Form.MaximumWeight;
}
return 0;
}
}
#endif
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SafeProcessHandle.cs
- RijndaelManagedTransform.cs
- ReadOnlyTernaryTree.cs
- Terminate.cs
- TypeElement.cs
- OdbcDataReader.cs
- WeakEventManager.cs
- SplitterEvent.cs
- FileUpload.cs
- StyleReferenceConverter.cs
- DataGridViewIntLinkedList.cs
- PathSegmentCollection.cs
- RealProxy.cs
- UDPClient.cs
- ResourceSetExpression.cs
- TransformerTypeCollection.cs
- MemberDescriptor.cs
- EncoderNLS.cs
- BaseCodePageEncoding.cs
- TableParagraph.cs
- TargetInvocationException.cs
- TagMapInfo.cs
- SchemaElementLookUpTableEnumerator.cs
- TypedTableHandler.cs
- NativeMethods.cs
- QueryResponse.cs
- SymmetricKey.cs
- MembershipPasswordException.cs
- DeflateStream.cs
- TemplateBindingExtensionConverter.cs
- IUnknownConstantAttribute.cs
- WindowsSlider.cs
- DependencyStoreSurrogate.cs
- NullReferenceException.cs
- MenuItemStyleCollection.cs
- ListViewGroup.cs
- Pair.cs
- Expression.cs
- StickyNoteHelper.cs
- CodeFieldReferenceExpression.cs
- FixedBufferAttribute.cs
- SecurityKeyIdentifier.cs
- PhysicalAddress.cs
- TableDetailsCollection.cs
- SqlDataSourceQuery.cs
- TimeStampChecker.cs
- XsdCachingReader.cs
- PathFigureCollection.cs
- ValidationEventArgs.cs
- ObjectDataSourceMethodEventArgs.cs
- COM2Properties.cs
- ProcessModelInfo.cs
- GeometryHitTestParameters.cs
- NumericExpr.cs
- NativeRightsManagementAPIsStructures.cs
- EntityCommand.cs
- VSWCFServiceContractGenerator.cs
- _ListenerAsyncResult.cs
- SByteConverter.cs
- DrawingBrush.cs
- SafeHGlobalHandleCritical.cs
- Quad.cs
- XmlDocument.cs
- UInt16.cs
- ListViewItemSelectionChangedEvent.cs
- HyperLinkDataBindingHandler.cs
- LassoSelectionBehavior.cs
- ResizeGrip.cs
- FunctionDetailsReader.cs
- DateTimePickerDesigner.cs
- CqlGenerator.cs
- DelayLoadType.cs
- SqlNotificationEventArgs.cs
- SrgsRuleRef.cs
- PointF.cs
- GetPageCompletedEventArgs.cs
- DataTableMappingCollection.cs
- Win32PrintDialog.cs
- Style.cs
- ToolStripItem.cs
- BordersPage.cs
- bindurihelper.cs
- EncodingTable.cs
- DataSourceConverter.cs
- HtmlShim.cs
- DataRecord.cs
- DataGridViewControlCollection.cs
- JournalEntryStack.cs
- StateDesigner.Layouts.cs
- ResponseStream.cs
- HybridCollection.cs
- basemetadatamappingvisitor.cs
- DateBoldEvent.cs
- RepeaterItemCollection.cs
- HtmlElementCollection.cs
- CFStream.cs
- FixedPageAutomationPeer.cs
- PngBitmapEncoder.cs
- AttachedAnnotationChangedEventArgs.cs
- DemultiplexingClientMessageFormatter.cs