C# 事件

/**//*
 * 由 SharpDevelop 创建。
 * 用户: huy
 * 日期: 2010-3-13
 * 时间: 7:35
*/

using System;
using System.Threading;
class Publisher//出版社
{
    public delegate void Publish();//声明事件所需代理
    public event Publish OnPublish;//事件代理
    
    public void issue()//触发事件的方法
    {
        if(OnPublish != null)
        {
            Console.WriteLine("发行刊物!");
            OnPublish();
        }
    }
}

class Subscriber//订阅者
{
    public void Receiver()//在事件订阅者中定义事件处理程序
    {
        Console.WriteLine("刊物已经收到!");
    }
}

class Story
{
    static void Main()
    {
        Publisher publisher = new Publisher();
        Subscriber subscriber = new Subscriber();
        publisher.OnPublish += new Publisher.Publish(subscriber.Receiver);
        publisher.issue();
        Thread.Sleep(5000);
    }
}