Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
Raising an event invokes the event handler through a delegate. For more information, see Consuming Events.
The method also enables 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 you override the in a derived class, make sure that you call the method for the base class so that registered delegates receive the event.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)