Assembly: System.Web (in system.web.dll)
The Sorting event is raised when the hyperlink to sort a column is clicked, but before the GridView control handles the sort operation. This allows you to provide an event-handling method that performs a custom routine, such as canceling the sorting operation, whenever this event occurs.
Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.
The OnSorting 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 OnSorting in a derived class, be sure to call the base class's OnSorting method so that registered delegates receive the event.