protected virtual void OnKeyExit(KeyExitEventArgs e)

Protected Overridable Sub OnKeyExit(e As KeyExitEventArgs)

Raising an event invokes the event handler through a delegate.

The OnKeyExit 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 OnKeyExit in a derived class, be sure to call the base class's OnKeyExit method so that registered delegates receive the event.