多线程处理

  while (true)
            {
                Thread.Sleep(1000);//这句写着，主要是没必要循环那么多次。去掉也可以。
                int maxWorkerThreads, workerThreads;
                int portThreads;
                ThreadPool.GetMaxThreads(out maxWorkerThreads, out portThreads);
                ThreadPool.GetAvailableThreads(out workerThreads, out portThreads);
                if (maxWorkerThreads - workerThreads == 0)
                {
                    Console.WriteLine("结束了");
                    break;
                }
            }