OnListChanged(ListChangedType,Int32,Int32) Method

Called when items are added or removed from the collection.

Syntax

Visual Basic

'Declaration
 
Protected Overloads Overridable Sub OnListChanged( _
   ByVal listChangedType As ListChangedType, _
   ByVal newIndex As Integer, _
   ByVal oldIndex As Integer _
) 

C#

protected virtual void OnListChanged( 
   ListChangedType listChangedType,
   int newIndex,
   int oldIndex
)

Parameters

listChangedType

The type of change which has occurred in the collection.

newIndex

The index, if applicable, of the item which was changed.

oldIndex

The old index, if applicable, of an item which has been moved.

Remarks

Derived classes should call this method after an item has been added or removed from the collection.

Derived classes should override this method if it is necessary to take any action after the collection is modified.

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2