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);
         }
     }
 }