The code you posted declares the event to raise it you'd use Raiseevent just like in VB6. You can also declare an Event as a Delegate or use a system delegate.
VB Code:
  1. 'in class declaration of an event
  2. Public Event Changed(ByVal sender as object, ByVal e as EventArgs)
  3.  
  4. 'in class declaration of an event using a system delegate
  5. Public Event Changed As EventHandler
  6.  
  7. 'in class declaration of a delegate and event for it
  8. Public Delegate Sub ChangedHandler(ByVal sender as object, ByVal e as EventArgs)
  9.  
  10. Public Event Changed as ChangedHandler
  11.  
  12. 'in all cases you can raise the event from within the class like this
  13. RaiseEvent Changed(Me, Nothing)