Occurs when a row's Edit button is clicked, but before the GridView control enters edit mode.
Assembly: System.Web (in System.Web.dll)
The event is raised when a row's Edit button is clicked, but before the GridView control enters edit mode. This enables you to provide an event-handling method that performs a custom routine, such as canceling the edit operation, whenever this event occurs.
A GridViewEditEventArgs object is passed to the event-handling method, which enables you to determine the index of the current row and to indicate that the edit operation should be canceled. To cancel the edit operation, set the Cancel property of the GridViewEditEventArgs object to true.
For more information about handling events, see Consuming Events.
The following example demonstrates how to use the event to put a row in edit mode when the data source is set programmatically.
The following example demonstrates how to use the event to cancel the editing operation if the user attempts to edit the record for a company in the United States.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.