简单易懂的C#委托与事件

委托与事件就好比食堂有个厨师，做了很多道的菜，但是他不知道每个顾客要点什么菜。

顾客是来吃厨师做的菜的，但每个的喜好不一样，有的要点A菜，有的要点B菜。

厨师做的这些菜都放在一个菜架窗口里，顾客都可以看得见，当看到自己喜欢的菜时，就手指一下，或叫出菜的名子，让打菜员给你夹到盘子上。 

菜架窗口：Class Life

A菜，B菜，C菜：Method (EatA(),EatB(), .......)
代码：

C#

public class Life     {         public delegate void LifeGate();         public event LifeGate lifeEvent;         public event LifeGate event2;         public void LifeAll(string lifeType)         {             if (lifeType ="=" "GoBed")             {                 if (event2 != null)                 {                     event2();                 }             }             else if (lifeType ="=" "Eat")             {                 if (lifeEvent != null)                 {                     lifeEvent();                 }             }             else             {             }         }         //eat         public void EatA()         {             Console.WriteLine("我要吃A的东西!");         }         public void EatB()         {             Console.WriteLine("我要吃B的东西!");         }         public void EatC()         {             Console.WriteLine("我要吃C的东西!");         }         //gobed         public void GoBedA()         {             Console.WriteLine("我要睡A的床");         }         public void GoBedB()         {             Console.WriteLine("我要睡B的床");         }         public void GoBedC()         {             Console.WriteLine("我要睡C的床");         }     }

  

C#

class Program     {         static void Main(string[] args)         {             Life f = new Life();             f.lifeEvent += f.EatA;             f.lifeEvent += f.EatC;             f.lifeEvent -= f.EatA;             f.lifeEvent += f.EatB;             f.LifeAll("Eat");             Console.WriteLine("finished Eat");             f.event2 += f.GoBedB;             f.LifeAll("GoBed");             Console.WriteLine("finished GoBed");             ConsoleKeyInfo cki;             while (true) { cki = Console.ReadKey(true); if (cki.Key ="=" ConsoleKey.Enter) break; }         }     }

 
Life是菜窗口...里面有厨师做的所有菜...
Program 是顾客：从中可以看出顾客选出B，C两道菜!