using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        public delegate void Del(string message);

        public static void DelegateMethod(string message)
        {
            System.Console.WriteLine(message);
        }
        public static void MethodWithCallback(int param1, int param2, Del callback)
        {
            callback("最终的数值为：" + (param1 + param2).ToString());
        }

        static void Main(string[] args)
        {
            Del handler = DelegateMethod;
            MethodWithCallback(1, 2, handler);
            System.Console.ReadLine();
        }
    }
}