C#Ï̳߳ØʹÓÃDemo

class Program
{
   static void Main(string[] args)
   {
       Console.WriteLine("Begin in Main");

       ThreadPool.QueueUserWorkItem(new WaitCallback(ThreadDo), 1);
       Thread.Sleep(300);
       ThreadPool.QueueUserWorkItem(new WaitCallback(ThreadDo), 2);

       Thread.Sleep(300);
       Console.WriteLine("End in Main");

       Thread.Sleep(5000);
   }

   static void ThreadDo(Object o)
   {
       for (int i = 0; i < 5; i++)
       {
           Console.WriteLine("[Thread " + (int)o + "] Execute in ThreadDo");
           Thread.Sleep(100);
       }
   }
}