//定义委托，它定义了可以代表的方法的类型      

    public delegate void GreetingDelegate(string name);

    class Program

    {

        private static void EnglishGreeting(string name)

        { Console.WriteLine("Morning, " + name); }             

        private static 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  

        private static void GreetPeople(string name, GreetingDelegate MakeGreeting) 

        //也可以直接使用系统内置委托

        //private static void GreetPeople(string name, Action<string> MakeGreeting)

        { MakeGreeting(name); }             

       

        static void Main(string[] args)

        {

            GreetPeople("Jimmy Zhang", EnglishGreeting);

            GreetPeople("张子阳", ChineseGreeting);

            Console.ReadKey();

        }

    }