How to: Connect Event Handler Methods to Events
To consume events defined in another class, you must define and register an event handler. The event handler must have the same method signature as the delegate declared for the event. You register your event handler by adding the handler to the event. After you have added your event handler to the event, the method is called whenever the class raises the event.
For a complete sample that illustrates raising and handling events, see How to: Raise and Consume Events.
To add an event handler method for an event
Define an event handler method with the same signature as the event delegate.
Create an instance of the delegate, using a reference to the event handler method. When the delegate instance is called, it in turn calls the event handler method.
Add the delegate instance to the event. When the event is raised, the delegate instance and its associated event handler method is called.