c# 子线程运行完通知主线程

来源：互联网发布：黑人枪杀知乎编辑：程序博客网时间：2024/06/06 19:26

  class Program    {        public delegate void Entrust(string str);//定义一个委托        static void Main(string[] args)        {            Entrust callback = new Entrust(CallBack);            Thread th = new Thread(Fun);            th.IsBackground = true;            th.Start(callback);            Console.ReadKey();        }        private static void Fun(object obj)        {            for (int i = 0; i < 10; i++)            {                Console.WriteLine("子线程运行了{0}", i);                Thread.Sleep(500);            }            Entrust callBack = obj as Entrust;            callBack("子线程执行完成通知主线程");        }        private static void CallBack(string str)        {            Console.WriteLine(str);        }    }

上面就是通过委托向主线程传值（也就是通知主线程）的过程，也可以用.NET为我们提供的泛型委托来处理

public class Program    {        //定义一个为委托        public delegate void Entrust(string str);        static void Main(string[] args)        {            Action<string> callback = ((string str) => { Console.WriteLine(str); });            //Lamuda表达式            Thread th = new Thread(Fun);            th.IsBackground = true;            th.Start(callback);            Console.ReadKey();        }        private static void Fun(object obj) {            for (int i = 1; i <= 10; i++)            {                Console.WriteLine("子线程循环操作第 {0} 次",i);                Thread.Sleep(500);            }            Action<string> callback = obj as Action<string>;            callback("我是子线程，我执行完毕了，通知主线程");        }    }

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