/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// A very simple event demonstration.
using System;
// Declare a delegate for an event.
delegate void MyEventHandler();
// Declare an event class.
class MyEvent {
public event MyEventHandler SomeEvent;
// This is called to fire the event.
public void OnSomeEvent() {
if(SomeEvent != null)
SomeEvent();
}
}
public class EventDemo {
// An event handler.
static void handler() {
Console.WriteLine("Event occurred");
}
public static void Main() {
MyEvent evt = new MyEvent();
// Add handler() to the event list.
evt.SomeEvent += new MyEventHandler(handler);
// Fire the event.
evt.OnSomeEvent();
}
}
|