转自http://terrylee.cnblogs.com/archive/2005/12/09/293509.html using System;using System.Collections.Generic;using System.Text;using System.Threading; namespace SingletonCounter{    ///<summary>    ///功能：简单计数器的单件模式    ///编写：XXX    ///日期:2007年11月10日    ///</summary>     public class CounterSingleton    {        ///存储唯一的实例        static CounterSingleton uniCounter = new CounterSingleton();         ///存储计数值        private int totNum = 0;         private CounterSingleton()        {            ///线程延迟2000毫秒            Thread.Sleep(2000);        }         static public CounterSingleton Instance()        {            return uniCounter;        }         /// 计数加1        public void Add()        {            totNum ++;        }        ///获取当前计数值        public int GetCounter()        {            return totNum;        }     }     /// <summary>    /// 功能：创建一个多线程计数的类    /// 编写：XXX    /// 日期：2007年11月1日    /// </summary>        public class CountMutilThread    {        public CountMutilThread()        {         }         ///线程工作        public static void DoSomeWork()        {            string results = "";            CounterSingleton MyCounter = CounterSingleton.Instance();                        ///循环调用四次            for (int i = 1; i < 5; i++)            {                ///开始计数                MyCounter.Add();                results += "线程";                results += Thread.CurrentThread.Name.ToString() + "---->  ";                results += "当前的计数： ";                results += MyCounter.GetCounter().ToString();                results += "\n";                Console.WriteLine(results);                results = "";            }        }         public void StartMain()        {            Thread thread0 = Thread.CurrentThread;            thread0.Name = "Thread0";             Thread thread1 = new Thread(new ThreadStart(DoSomeWork));            thread1.Name = "Thread1";             Thread thread2 = new Thread(new ThreadStart(DoSomeWork));            thread2.Name = "Thread1";             Thread thread3 = new Thread(new ThreadStart(DoSomeWork));            thread3.Name = "Thread1";             thread1.Start();            thread2.Start();            thread3.Start();             //线程0也执行和其它线程相同的工作            DoSomeWork();        }    }     /// <summary>    /// 功能：实现多线程计数器的客户端    /// 编写：XXX    /// 日期：2007年11月10日    /// </summary>    public class CounteClient    {        public static void Main(string[] args)        {            CountMutilThread cmt = new CountMutilThread();            cmt.StartMain();            Console.ReadLine();        }    }}

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