Assembly: System.Web (in System.Web.dll)
The OnObjectCreating method is called, only if the method that is identified to perform the data operation is not static (Shared in Visual Basic).
Raising an event invokes the event handler through a delegate. For more information, see Consuming Events.
The 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 the method in a derived class, be sure to call the method for the base class so that registered delegates receive the event.