class HelloWorld

    {

       //定义委托类型

       delegate void DelegationChain();

       static void Main(string[] args)

       {

          //用静态方法来实例委托

          DelegationChain mydelegateone=new DelegationChain(HelloWorld.Fun2);

           //用实例方法来实例委托

          DelegationChain mydelegatetwo=new DelegationChain(new HelloWorld().Fun1);

          //定义一个委托对象初始化为null

          DelegationChain delegationChain=null;

           //使用‘+链接委托,链接后就成了委托链

           delegationChain+=mydelegateone;

           delegationChain+=mydelegatetwo;

           //调用委托链

           delegationChain();

          Console.ReadKey();

       }

       private void Fun1()

       {

           Console.WriteLine("Fun1");

       }

       private static void Fun2()

       {

           Console.WriteLine("Fun2");

       }

    }