Events and Delegates

• Delegates can invoke the methods that they reference without making explicit calls to those methods.
  
• Events are declares using delegates
  
• When an event occurs the control is passed to the event handler method.
  
• The event handling method is assigned to the event trough a delegate.
  
• Adding an event handing method to an event.
  

  Syntax:
  

  <Object.EventName> += new <DelegateName> (<funtionToCall>);
  

• Removing an event handling method to an event.
  

  Syntax:
  

  <Object.EventName> -= new <DelegateName> (<funtionToCall>);
  

• Event call.
  

  Syntax:
  

  <EventName> (<parameters>);
  

• When an event has no event handler assigned.
  

  Syntax:
  

  <EventName> is null;
  

• Invoking an event with no event handler will throw an exception