C# 委托

来源：互联网发布：淘宝开店方案编辑：程序博客网时间：2024/05/31 00:39

委托在一个方法里传递一个参数，这个参数是一个方法！回调！只是理解了一点，一个小测试！

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace TestWindows{    class Program    {        static void Main(string[] args)        {            string aaa = GetMes<string, string>(new Func<string, string>(TestString), "string");            Console.WriteLine("a=" + aaa);            int iii = GetMes<int, int>(new Func<int, int>(TestInt), 123);            Console.WriteLine("i=" + iii);            Console.ReadLine();        }        /// <summary>        /// 方法一        /// </summary>        /// <param name="i"></param>        /// <returns></returns>        public static int TestInt(int i)        {            return i;        }        /// <summary>        /// 方法二        /// </summary>        /// <param name="name"></param>        /// <returns></returns>        public static string TestString(string name)        {            return "string: "+name;        }        /// <summary>        /// 在该方法里调用方法一，二        /// </summary>        /// <typeparam name="TKey"></typeparam>        /// <typeparam name="TValue"></typeparam>        /// <param name="func"></param>        /// <param name="key"></param>        /// <returns></returns>        public static TValue GetMes<TKey,TValue>(Func<TKey,TValue> func,TKey key)        {            var v = func(key);                        return v;        }     }}