线程池

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

namespace ConsoleApplication1
{
    class Print
    {
        public void printNumbers()
        {
            Monitor.Enter(this);
            try
            {
                for (int i = 0; i < 10; i++)
                {
                    Console.Write("{0}\t", i);
                }
                Console.WriteLine();
            }
            finally
            {
                Monitor.Exit(this);
            }
        }
    }

    
    class Program
    {
        static void Main(string[] args)
        {
            Print p = new Print();
            WaitCallback workitem = new WaitCallback(printTheNumbers);

            for (int i = 0; i < 10; i++)
            {
                ThreadPool.QueueUserWorkItem(workitem, p);
            }

            Console.Read();
        }
        static void printTheNumbers(object state)
        {
            Print p = (Print)state;
            p.printNumbers();
        }
    }
}