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NotifyCollectionChangedEventArgs Constructor (NotifyCollectionChangedAction, IList, Int32)

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

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

public NotifyCollectionChangedEventArgs(
	NotifyCollectionChangedAction action,
	IList changedItems,
	int startingIndex
You cannot use constructors in XAML.


Type: System.Collections.Specialized.NotifyCollectionChangedAction

The action that caused the event. This can be set to Reset, Add, or Remove.

Type: System.Collections.IList

The items affected by the change.

Type: System.Int32

The index where the change occurred.


If action is not Reset, Add, or Remove, if action is Reset and either changedItems is not null or startingIndex is not -1, or if action is Add or Remove and startingIndex is less than -1.


If action is Add or Remove and changedItems is null.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0