C#定时检测子线程是不是已经完成

C#定时检测子线程是否已经完成

    class Program    {        static void Main(string[] args)        {            //主线程中启动一个支线程,执行doSomething这样的一个方法。            Thread thread = new Thread(new ThreadStart(ThreadRun));            thread.IsBackground = true;//这样能随主程序一起结束            thread.Start();            Console.ReadKey();        }        delegate void Delegate_do();        static void ThreadRun()        {            try            {                Delegate_do Delegate_do = new Delegate_do(FindAllProduct);                IAsyncResult result = Delegate_do.BeginInvoke(null, null);                while (!result.IsCompleted)                {                    Console.WriteLine("子线程未完成");                    Thread.Sleep(1000);//每隔1秒判断一下是否完成                }                while (true)                {                    if (result.IsCompleted)                    {                        Console.WriteLine("-------子线程已完成-------");                        break;                    }                }            }            catch (Exception ex)            {                Console.WriteLine(ex.Message);            }        }        static void FindAllProduct()        {            List<int> array = new List<int>();            for (int i = 0; i < 100000000; i++)            {                array.Add(i);            }            int m = 0;            foreach (var i in array)            {                m++;            }            Console.WriteLine(m);        }    }