ListBox::RaisePostDataChangedEvent Method
Invokes the OnSelectedIndexChanged method whenever posted data for the ListBox control has changed.
Assembly: System.Web (in System.Web.dll)
The RaisePostDataChangedEvent method is used primarily by control developers, when deriving a custom control from the ListBox control.
The ASP.NET page framework calls the RaisePostDataChangedEvent method on a ListBox control when the LoadPostData method indicates that the state of the list items have changed in the ListBox control. The RaisePostDataChangedEvent method calls the OnSelectedIndexChanged method to raise the SelectedIndexChanged event. Control developers can override the OnSelectedIndexChanged method to perform custom processing when the user selects list items in the control.
The RaisePostDataChangedEvent method can optionally perform validation before raising the SelectedIndexChanged event for the control. To validate a group of controls on the page when a list item within the ListBox is selected, set the AutoPostBack and CausesValidation properties to true, and then specify the group of controls to validate in the ValidationGroup property.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
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.