C#的线程_线程池

class Program {        static void ThreadMethod(object state)        {            Console.WriteLine("线程开始:"+Thread.CurrentThread.ManagedThreadId);            Thread.Sleep(2000);            Console.WriteLine("线程结束");        }        static void Main(string[] args)        {            ThreadPool.QueueUserWorkItem(ThreadMethod);//开启一个工作线程            ThreadPool.QueueUserWorkItem(ThreadMethod);            ThreadPool.QueueUserWorkItem(ThreadMethod);            ThreadPool.QueueUserWorkItem(ThreadMethod);            ThreadPool.QueueUserWorkItem(ThreadMethod);            ThreadPool.QueueUserWorkItem(ThreadMethod);            ThreadPool.QueueUserWorkItem(ThreadMethod);            Console.ReadKey();        }    }