委托、 Lambda表达式和事件——事件

/*
 * 由SharpDevelop创建。
 * 用户： David Huang
 * 日期: 2015/7/31
 * 时间: 14:21
 */
using System;

namespace 事件
{
    public class GameInfoEventArgs:EventArgs
    {
        public string Game{get;set;}
        
        public GameInfoEventArgs(string game)
        {
            this.Game = game;
        }
    }
    
    public class TV
    {
        public event EventHandler<GameInfoEventArgs> NewGame;
        
        public void GameStart(string game)
        {
            Console.WriteLine("{0}的比赛开始了。",game);
            
            if (NewGame!=null) {
                NewGame(this,new GameInfoEventArgs(game));
            }
        }
        
    }
    
    public class Person
    {
        public string Name{get;set;}
        
        public Person(string name)
        {
            this.Name=name;
        }
        
        public void WatchGame(object sender,GameInfoEventArgs e)
        {
            Console.WriteLine("{0}开始看{1}的比赛。",Name,e.Game);
        }
    }
    
    class Program
    {
        public static void Main(string[] args)
        {

            TV tv=new TV();
            
            Person me=new Person("我");
            tv.NewGame+=me.WatchGame;
            
            Person tom=new Person("tom");
            tv.NewGame+=tom.WatchGame;
            
            tv.GameStart("曼联");
            
            Console.Write("Press any key to continue . . . ");
            Console.ReadKey(true);
        }
    }
}