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CollectionChangeEventHandler Delegate

Represents the method that handles the CollectionChanged event raised when adding elements to or removing elements from a collection.

[Visual Basic]
Public Delegate Sub CollectionChangeEventHandler( _
   ByVal sender As Object, _
   ByVal e As CollectionChangeEventArgs _
public delegate void CollectionChangeEventHandler(
   object sender,
   CollectionChangeEventArgs e
public __gc __delegate void CollectionChangeEventHandler(
   Object* sender,
   CollectionChangeEventArgs* e

[JScript] In JScript, you can use the delegates in the .NET Framework, but you cannot define your own.

Parameters [Visual Basic, C#, C++]

The declaration of your event handler must have the same parameters as the CollectionChangeEventHandler delegate declaration.

The source of the event.
A CollectionChangeEventArgs that contains the event data.


When you create a CollectionChangeEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event handler delegates, see Events and Delegates.


For an example of using the CollectionChangeEventHandler delegate, see the sample code in the CollectionChanged event of the DataColumnCollection class.


Namespace: System.ComponentModel

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

Assembly: System (in System.dll)

See Also

System.ComponentModel Namespace | CollectionChangeEventArgs | CollectionChangeAction