Assembly: System.Web (in system.web.dll)
The SelectedIndexChanged event is raised when a different item is selected in a data listing control between posts to the server. The OnSelectedIndexChanged method allows you to create a custom handler for the event.
Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.
The OnSelectedIndexChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.Notes to Inheritors When overriding OnSelectedIndexChanged in a derived class, be sure to call the base class's OnSelectedIndexChanged method so that registered delegates receive the event.
Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.