static void Main(string[] args)
{
    //设置线程池中的线程数最大为1000,第一个为工作者线程，第二个为I/O线程
    ThreadPool.SetMaxThreads(1000, 1000);
    for (int i = 0; i < 10;i   )
    {
        ThreadPool.QueueUserWorkItem(new WaitCallback(ShowMessage), string.Format("当前编号{0}",i));
    }
    Console.ReadLine();
      
}
//带参数 无返回值
static void ShowMessage(object x)
{
    string current = string.Format("当前线程id为{0}", System.
        Threading.Thread.CurrentThread.ManagedThreadId);
    //等待1秒钟
    System.Threading.Thread.Sleep(1000);
    Console.WriteLine(string.Format("{0},输入为{1}", current, x));
  
}
//csharp/6982