//定义委托，它定义了可以代表的方法的类型        public delegate void GreetingDelegate(string name);        /// 
        /// 用英文打招呼        /// 
        ///         private void EnglishGreeting(string name)        {            Console.WriteLine("Morning, " + name);        }        /// 
        /// 用中文打招呼        /// 
        ///         private void ChineseGreeting(string name)        {            Console.WriteLine("早上好, " + name);        }        //注意此方法，它接受一个GreetingDelegate类型的方法作为参数        /// 
        /// 委托(代理的方法)        /// 
        ///         ///         private void GreetPeople(string name, GreetingDelegate MakeGreeting)        {            MakeGreeting(name);        }        private void Form1_Load(object sender, EventArgs e)        {            //Delegate方式一：            //GreetPeople("Jimmy Zhang", EnglishGreeting);            //GreetPeople("张子阳", ChineseGreeting);            //Console.ReadKey();            //Action方式二：            GreetPeopleAction("Jimmy Zhang", (s) =>            {                Console.WriteLine("Morning, " + s);            });            GreetPeopleAction("张子阳", (s) =>            {                Console.WriteLine("早少好, " + s);            });            Console.ReadKey();        }        /// 
        /// Action委托作为参数        /// 
        ///         ///         public void GreetPeopleAction(string name, Action
     
       action)        {            action(name);        }