Occurs when the Activity is run.
Assembly: System.Workflow.ComponentModel (in System.Workflow.ComponentModel.dll)
Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.
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 in a derived class, make sure to call the base class method so that registered delegates receive the event.