Mega Code Archive
An event multicast demonstration
<![CDATA[
using System;
delegate void MyEventHandler();
class MyEvent {
public event MyEventHandler SomeEvent;
public void OnSomeEvent() {
if(SomeEvent != null)
SomeEvent();
}
}
class MouseEvent {
public void MouseEventHandler() {
Console.WriteLine("Event received by MouseEventHandler object");
}
}
class KeyEvent {
public void KeyEventHandler() {
Console.WriteLine("Event received by KeyEventHandler object");
}
}
class MainClass {
static void handler() {
Console.WriteLine("Event received by EventDemo");
}
public static void Main() {
MyEvent evt = new MyEvent();
MouseEvent xOb = new MouseEvent();
KeyEvent yOb = new KeyEvent();
evt.SomeEvent += handler;
evt.SomeEvent += xOb.MouseEventHandler;
evt.SomeEvent += yOb.KeyEventHandler;
evt.OnSomeEvent();
Console.WriteLine();
evt.SomeEvent -= xOb.MouseEventHandler;
evt.OnSomeEvent();
}
}
Event received by EventDemo
Event received by MouseEventHandler object
Event received by KeyEventHandler object
Event received by EventDemo
Event received by KeyEventHandler object
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