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NotifyCollectionChangedEventArgs.NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction, IList, IList, Int32) Constructor

Initializes a new instance of the NotifyCollectionChangedEventArgs class that describes a multi-item Replace change.

Namespace: System.Collections.Specialized
Assembly: WindowsBase (in windowsbase.dll)

Public Sub New ( _
	action As NotifyCollectionChangedAction, _
	newItems As IList, _
	oldItems As IList, _
	startingIndex As Integer _
Dim action As NotifyCollectionChangedAction
Dim newItems As IList
Dim oldItems As IList
Dim startingIndex As Integer

Dim instance As New NotifyCollectionChangedEventArgs(action, newItems, oldItems, startingIndex)
public NotifyCollectionChangedEventArgs (
	NotifyCollectionChangedAction action, 
	IList newItems, 
	IList oldItems, 
	int startingIndex
public function NotifyCollectionChangedEventArgs (
	action : NotifyCollectionChangedAction, 
	newItems : IList, 
	oldItems : IList, 
	startingIndex : int
You cannot use constructors in XAML.



The action that caused the event. This can only be set to Replace.


The new items that are replacing the original items.


The original items that are replaced.


The index of the first item of the items that are being replaced.

Exception typeCondition


If action is not Replace.


If oldItems or newItems is null.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0