Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / CompMod / System / Collections / Specialized / NotifyCollectionChangedEventArgs.cs / 1305376 / NotifyCollectionChangedEventArgs.cs
//----------------------------------------------------------------------------
//
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//
// Description: NotifyCollectionChanged event arguments
//
// Specs: http://avalon/connecteddata/Specs/INotifyCollectionChanged.mht
//
//---------------------------------------------------------------------------
using System;
using System.Collections;
using System.Diagnostics.Contracts;
using System.Runtime.CompilerServices;
namespace System.Collections.Specialized
{
///
/// This enum describes the action that caused a CollectionChanged event.
///
[TypeForwardedFrom("WindowsBase, Version=3.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]
public enum NotifyCollectionChangedAction
{
/// One or more items were added to the collection.
Add,
/// One or more items were removed from the collection.
Remove,
/// One or more items were replaced in the collection.
Replace,
/// One or more items were moved within the collection.
Move,
/// The contents of the collection changed dramatically.
Reset,
}
///
/// Arguments for the CollectionChanged event.
/// A collection that supports INotifyCollectionChangedThis raises this event
/// whenever an item is added or removed, or when the contents of the collection
/// changes dramatically.
///
[TypeForwardedFrom("WindowsBase, Version=3.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]
public class NotifyCollectionChangedEventArgs : EventArgs
{
//-----------------------------------------------------
//
// Constructors
//
//-----------------------------------------------------
///
/// Construct a NotifyCollectionChangedEventArgs that describes a reset change.
///
/// The action that caused the event (must be Reset).
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action)
{
if (action != NotifyCollectionChangedAction.Reset)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Reset), "action");
InitializeAdd(action, null, -1);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a one-item change.
///
/// The action that caused the event; can only be Reset, Add or Remove action.
/// The item affected by the change.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, object changedItem)
{
if ((action != NotifyCollectionChangedAction.Add) && (action != NotifyCollectionChangedAction.Remove)
&& (action != NotifyCollectionChangedAction.Reset))
throw new ArgumentException(SR.GetString(SR.MustBeResetAddOrRemoveActionForCtor), "action");
if (action == NotifyCollectionChangedAction.Reset)
{
if (changedItem != null)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresNullItem), "action");
InitializeAdd(action, null, -1);
}
else
{
InitializeAddOrRemove(action, new object[]{changedItem}, -1);
}
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a one-item change.
///
/// The action that caused the event.
/// The item affected by the change.
/// The index where the change occurred.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, object changedItem, int index)
{
if ((action != NotifyCollectionChangedAction.Add) && (action != NotifyCollectionChangedAction.Remove)
&& (action != NotifyCollectionChangedAction.Reset))
throw new ArgumentException(SR.GetString(SR.MustBeResetAddOrRemoveActionForCtor), "action");
if (action == NotifyCollectionChangedAction.Reset)
{
if (changedItem != null)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresNullItem), "action");
if (index != -1)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresIndexMinus1), "action");
InitializeAdd(action, null, -1);
}
else
{
InitializeAddOrRemove(action, new object[]{changedItem}, index);
}
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a multi-item change.
///
/// The action that caused the event.
/// The items affected by the change.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, IList changedItems)
{
if ((action != NotifyCollectionChangedAction.Add) && (action != NotifyCollectionChangedAction.Remove)
&& (action != NotifyCollectionChangedAction.Reset))
throw new ArgumentException(SR.GetString(SR.MustBeResetAddOrRemoveActionForCtor), "action");
if (action == NotifyCollectionChangedAction.Reset)
{
if (changedItems != null)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresNullItem), "action");
InitializeAdd(action, null, -1);
}
else
{
if (changedItems == null)
throw new ArgumentNullException("changedItems");
InitializeAddOrRemove(action, changedItems, -1);
}
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a multi-item change (or a reset).
///
/// The action that caused the event.
/// The items affected by the change.
/// The index where the change occurred.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, IList changedItems, int startingIndex)
{
if ((action != NotifyCollectionChangedAction.Add) && (action != NotifyCollectionChangedAction.Remove)
&& (action != NotifyCollectionChangedAction.Reset))
throw new ArgumentException(SR.GetString(SR.MustBeResetAddOrRemoveActionForCtor), "action");
if (action == NotifyCollectionChangedAction.Reset)
{
if (changedItems != null)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresNullItem), "action");
if (startingIndex != -1)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresIndexMinus1), "action");
InitializeAdd(action, null, -1);
}
else
{
if (changedItems == null)
throw new ArgumentNullException("changedItems");
if (startingIndex < -1)
throw new ArgumentException(SR.GetString(SR.IndexCannotBeNegative), "startingIndex");
InitializeAddOrRemove(action, changedItems, startingIndex);
}
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a one-item Replace event.
///
/// Can only be a Replace action.
/// The new item replacing the original item.
/// The original item that is replaced.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, object newItem, object oldItem)
{
if (action != NotifyCollectionChangedAction.Replace)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Replace), "action");
InitializeMoveOrReplace(action, new object[]{newItem}, new object[]{oldItem}, -1, -1);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a one-item Replace event.
///
/// Can only be a Replace action.
/// The new item replacing the original item.
/// The original item that is replaced.
/// The index of the item being replaced.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, object newItem, object oldItem, int index)
{
if (action != NotifyCollectionChangedAction.Replace)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Replace), "action");
InitializeMoveOrReplace(action, new object[]{newItem}, new object[]{oldItem}, index, index);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a multi-item Replace event.
///
/// Can only be a Replace action.
/// The new items replacing the original items.
/// The original items that are replaced.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, IList newItems, IList oldItems)
{
if (action != NotifyCollectionChangedAction.Replace)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Replace), "action");
if (newItems == null)
throw new ArgumentNullException("newItems");
if (oldItems == null)
throw new ArgumentNullException("oldItems");
InitializeMoveOrReplace(action, newItems, oldItems, -1, -1);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a multi-item Replace event.
///
/// Can only be a Replace action.
/// The new items replacing the original items.
/// The original items that are replaced.
/// The starting index of the items being replaced.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, IList newItems, IList oldItems, int startingIndex)
{
if (action != NotifyCollectionChangedAction.Replace)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Replace), "action");
if (newItems == null)
throw new ArgumentNullException("newItems");
if (oldItems == null)
throw new ArgumentNullException("oldItems");
InitializeMoveOrReplace(action, newItems, oldItems, startingIndex, startingIndex);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a one-item Move event.
///
/// Can only be a Move action.
/// The item affected by the change.
/// The new index for the changed item.
/// The old index for the changed item.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, object changedItem, int index, int oldIndex)
{
if (action != NotifyCollectionChangedAction.Move)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Move), "action");
if (index < 0)
throw new ArgumentException(SR.GetString(SR.IndexCannotBeNegative), "index");
object[] changedItems= new object[] {changedItem};
InitializeMoveOrReplace(action, changedItems, changedItems, index, oldIndex);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a multi-item Move event.
///
/// The action that caused the event.
/// The items affected by the change.
/// The new index for the changed items.
/// The old index for the changed items.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, IList changedItems, int index, int oldIndex)
{
if (action != NotifyCollectionChangedAction.Move)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Move), "action");
if (index < 0)
throw new ArgumentException(SR.GetString(SR.IndexCannotBeNegative), "index");
InitializeMoveOrReplace(action, changedItems, changedItems, index, oldIndex);
}
private void InitializeAddOrRemove(NotifyCollectionChangedAction action, IList changedItems, int startingIndex)
{
if (action == NotifyCollectionChangedAction.Add)
InitializeAdd(action, changedItems, startingIndex);
else if (action == NotifyCollectionChangedAction.Remove)
InitializeRemove(action, changedItems, startingIndex);
else
Contract.Assert(false, String.Format("Unsupported action: {0}", action.ToString()));
}
private void InitializeAdd(NotifyCollectionChangedAction action, IList newItems, int newStartingIndex)
{
_action = action;
_newItems = (newItems == null) ? null : ArrayList.ReadOnly(newItems);
_newStartingIndex = newStartingIndex;
}
private void InitializeRemove(NotifyCollectionChangedAction action, IList oldItems, int oldStartingIndex)
{
_action = action;
_oldItems = (oldItems == null) ? null : ArrayList.ReadOnly(oldItems);
_oldStartingIndex= oldStartingIndex;
}
private void InitializeMoveOrReplace(NotifyCollectionChangedAction action, IList newItems, IList oldItems, int startingIndex, int oldStartingIndex)
{
InitializeAdd(action, newItems, startingIndex);
InitializeRemove(action, oldItems, oldStartingIndex);
}
//------------------------------------------------------
//
// Public Properties
//
//-----------------------------------------------------
///
/// The action that caused the event.
///
public NotifyCollectionChangedAction Action
{
get { return _action; }
}
///
/// The items affected by the change.
///
public IList NewItems
{
get { return _newItems; }
}
///
/// The old items affected by the change (for Replace events).
///
public IList OldItems
{
get { return _oldItems; }
}
///
/// The index where the change occurred.
///
public int NewStartingIndex
{
get { return _newStartingIndex; }
}
///
/// The old index where the change occurred (for Move events).
///
public int OldStartingIndex
{
get { return _oldStartingIndex; }
}
//------------------------------------------------------
//
// Private Fields
//
//------------------------------------------------------
private NotifyCollectionChangedAction _action;
private IList _newItems, _oldItems;
private int _newStartingIndex = -1;
private int _oldStartingIndex = -1;
}
///
/// The delegate to use for handlers that receive the CollectionChanged event.
///
[TypeForwardedFrom("WindowsBase, Version=3.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]
public delegate void NotifyCollectionChangedEventHandler(object sender, NotifyCollectionChangedEventArgs e);
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------------------
//
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//
// Description: NotifyCollectionChanged event arguments
//
// Specs: http://avalon/connecteddata/Specs/INotifyCollectionChanged.mht
//
//---------------------------------------------------------------------------
using System;
using System.Collections;
using System.Diagnostics.Contracts;
using System.Runtime.CompilerServices;
namespace System.Collections.Specialized
{
///
/// This enum describes the action that caused a CollectionChanged event.
///
[TypeForwardedFrom("WindowsBase, Version=3.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]
public enum NotifyCollectionChangedAction
{
/// One or more items were added to the collection.
Add,
/// One or more items were removed from the collection.
Remove,
/// One or more items were replaced in the collection.
Replace,
/// One or more items were moved within the collection.
Move,
/// The contents of the collection changed dramatically.
Reset,
}
///
/// Arguments for the CollectionChanged event.
/// A collection that supports INotifyCollectionChangedThis raises this event
/// whenever an item is added or removed, or when the contents of the collection
/// changes dramatically.
///
[TypeForwardedFrom("WindowsBase, Version=3.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]
public class NotifyCollectionChangedEventArgs : EventArgs
{
//-----------------------------------------------------
//
// Constructors
//
//-----------------------------------------------------
///
/// Construct a NotifyCollectionChangedEventArgs that describes a reset change.
///
/// The action that caused the event (must be Reset).
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action)
{
if (action != NotifyCollectionChangedAction.Reset)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Reset), "action");
InitializeAdd(action, null, -1);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a one-item change.
///
/// The action that caused the event; can only be Reset, Add or Remove action.
/// The item affected by the change.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, object changedItem)
{
if ((action != NotifyCollectionChangedAction.Add) && (action != NotifyCollectionChangedAction.Remove)
&& (action != NotifyCollectionChangedAction.Reset))
throw new ArgumentException(SR.GetString(SR.MustBeResetAddOrRemoveActionForCtor), "action");
if (action == NotifyCollectionChangedAction.Reset)
{
if (changedItem != null)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresNullItem), "action");
InitializeAdd(action, null, -1);
}
else
{
InitializeAddOrRemove(action, new object[]{changedItem}, -1);
}
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a one-item change.
///
/// The action that caused the event.
/// The item affected by the change.
/// The index where the change occurred.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, object changedItem, int index)
{
if ((action != NotifyCollectionChangedAction.Add) && (action != NotifyCollectionChangedAction.Remove)
&& (action != NotifyCollectionChangedAction.Reset))
throw new ArgumentException(SR.GetString(SR.MustBeResetAddOrRemoveActionForCtor), "action");
if (action == NotifyCollectionChangedAction.Reset)
{
if (changedItem != null)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresNullItem), "action");
if (index != -1)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresIndexMinus1), "action");
InitializeAdd(action, null, -1);
}
else
{
InitializeAddOrRemove(action, new object[]{changedItem}, index);
}
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a multi-item change.
///
/// The action that caused the event.
/// The items affected by the change.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, IList changedItems)
{
if ((action != NotifyCollectionChangedAction.Add) && (action != NotifyCollectionChangedAction.Remove)
&& (action != NotifyCollectionChangedAction.Reset))
throw new ArgumentException(SR.GetString(SR.MustBeResetAddOrRemoveActionForCtor), "action");
if (action == NotifyCollectionChangedAction.Reset)
{
if (changedItems != null)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresNullItem), "action");
InitializeAdd(action, null, -1);
}
else
{
if (changedItems == null)
throw new ArgumentNullException("changedItems");
InitializeAddOrRemove(action, changedItems, -1);
}
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a multi-item change (or a reset).
///
/// The action that caused the event.
/// The items affected by the change.
/// The index where the change occurred.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, IList changedItems, int startingIndex)
{
if ((action != NotifyCollectionChangedAction.Add) && (action != NotifyCollectionChangedAction.Remove)
&& (action != NotifyCollectionChangedAction.Reset))
throw new ArgumentException(SR.GetString(SR.MustBeResetAddOrRemoveActionForCtor), "action");
if (action == NotifyCollectionChangedAction.Reset)
{
if (changedItems != null)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresNullItem), "action");
if (startingIndex != -1)
throw new ArgumentException(SR.GetString(SR.ResetActionRequiresIndexMinus1), "action");
InitializeAdd(action, null, -1);
}
else
{
if (changedItems == null)
throw new ArgumentNullException("changedItems");
if (startingIndex < -1)
throw new ArgumentException(SR.GetString(SR.IndexCannotBeNegative), "startingIndex");
InitializeAddOrRemove(action, changedItems, startingIndex);
}
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a one-item Replace event.
///
/// Can only be a Replace action.
/// The new item replacing the original item.
/// The original item that is replaced.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, object newItem, object oldItem)
{
if (action != NotifyCollectionChangedAction.Replace)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Replace), "action");
InitializeMoveOrReplace(action, new object[]{newItem}, new object[]{oldItem}, -1, -1);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a one-item Replace event.
///
/// Can only be a Replace action.
/// The new item replacing the original item.
/// The original item that is replaced.
/// The index of the item being replaced.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, object newItem, object oldItem, int index)
{
if (action != NotifyCollectionChangedAction.Replace)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Replace), "action");
InitializeMoveOrReplace(action, new object[]{newItem}, new object[]{oldItem}, index, index);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a multi-item Replace event.
///
/// Can only be a Replace action.
/// The new items replacing the original items.
/// The original items that are replaced.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, IList newItems, IList oldItems)
{
if (action != NotifyCollectionChangedAction.Replace)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Replace), "action");
if (newItems == null)
throw new ArgumentNullException("newItems");
if (oldItems == null)
throw new ArgumentNullException("oldItems");
InitializeMoveOrReplace(action, newItems, oldItems, -1, -1);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a multi-item Replace event.
///
/// Can only be a Replace action.
/// The new items replacing the original items.
/// The original items that are replaced.
/// The starting index of the items being replaced.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, IList newItems, IList oldItems, int startingIndex)
{
if (action != NotifyCollectionChangedAction.Replace)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Replace), "action");
if (newItems == null)
throw new ArgumentNullException("newItems");
if (oldItems == null)
throw new ArgumentNullException("oldItems");
InitializeMoveOrReplace(action, newItems, oldItems, startingIndex, startingIndex);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a one-item Move event.
///
/// Can only be a Move action.
/// The item affected by the change.
/// The new index for the changed item.
/// The old index for the changed item.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, object changedItem, int index, int oldIndex)
{
if (action != NotifyCollectionChangedAction.Move)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Move), "action");
if (index < 0)
throw new ArgumentException(SR.GetString(SR.IndexCannotBeNegative), "index");
object[] changedItems= new object[] {changedItem};
InitializeMoveOrReplace(action, changedItems, changedItems, index, oldIndex);
}
///
/// Construct a NotifyCollectionChangedEventArgs that describes a multi-item Move event.
///
/// The action that caused the event.
/// The items affected by the change.
/// The new index for the changed items.
/// The old index for the changed items.
public NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction action, IList changedItems, int index, int oldIndex)
{
if (action != NotifyCollectionChangedAction.Move)
throw new ArgumentException(SR.GetString(SR.WrongActionForCtor, NotifyCollectionChangedAction.Move), "action");
if (index < 0)
throw new ArgumentException(SR.GetString(SR.IndexCannotBeNegative), "index");
InitializeMoveOrReplace(action, changedItems, changedItems, index, oldIndex);
}
private void InitializeAddOrRemove(NotifyCollectionChangedAction action, IList changedItems, int startingIndex)
{
if (action == NotifyCollectionChangedAction.Add)
InitializeAdd(action, changedItems, startingIndex);
else if (action == NotifyCollectionChangedAction.Remove)
InitializeRemove(action, changedItems, startingIndex);
else
Contract.Assert(false, String.Format("Unsupported action: {0}", action.ToString()));
}
private void InitializeAdd(NotifyCollectionChangedAction action, IList newItems, int newStartingIndex)
{
_action = action;
_newItems = (newItems == null) ? null : ArrayList.ReadOnly(newItems);
_newStartingIndex = newStartingIndex;
}
private void InitializeRemove(NotifyCollectionChangedAction action, IList oldItems, int oldStartingIndex)
{
_action = action;
_oldItems = (oldItems == null) ? null : ArrayList.ReadOnly(oldItems);
_oldStartingIndex= oldStartingIndex;
}
private void InitializeMoveOrReplace(NotifyCollectionChangedAction action, IList newItems, IList oldItems, int startingIndex, int oldStartingIndex)
{
InitializeAdd(action, newItems, startingIndex);
InitializeRemove(action, oldItems, oldStartingIndex);
}
//------------------------------------------------------
//
// Public Properties
//
//-----------------------------------------------------
///
/// The action that caused the event.
///
public NotifyCollectionChangedAction Action
{
get { return _action; }
}
///
/// The items affected by the change.
///
public IList NewItems
{
get { return _newItems; }
}
///
/// The old items affected by the change (for Replace events).
///
public IList OldItems
{
get { return _oldItems; }
}
///
/// The index where the change occurred.
///
public int NewStartingIndex
{
get { return _newStartingIndex; }
}
///
/// The old index where the change occurred (for Move events).
///
public int OldStartingIndex
{
get { return _oldStartingIndex; }
}
//------------------------------------------------------
//
// Private Fields
//
//------------------------------------------------------
private NotifyCollectionChangedAction _action;
private IList _newItems, _oldItems;
private int _newStartingIndex = -1;
private int _oldStartingIndex = -1;
}
///
/// The delegate to use for handlers that receive the CollectionChanged event.
///
[TypeForwardedFrom("WindowsBase, Version=3.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]
public delegate void NotifyCollectionChangedEventHandler(object sender, NotifyCollectionChangedEventArgs e);
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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