using System;using System.Collections.Generic;using System.Linq;using System.Threading;using System.Threading.Tasks;using System.Text;namespace Demo2{    class Program    {        static void Main(string[] args)        {            const int taskcount = 10;            //事件数组，记录线程执行状态            var mevents = new ManualResetEventSlim[taskcount];            //等待数组，接收事件发出的信号            var waithandles = new WaitHandle[taskcount];            //执行具体任务的类            var calcs = new Calculator[taskcount];            //任务工厂            TaskFactory tf = new TaskFactory();            for (int i = 0; i < taskcount; i++)            {                //初始化事件                mevents[i] = new ManualResetEventSlim(false);                //将事件与等待绑定                waithandles[i] = mevents[i].WaitHandle;                //初始化执行具体任务的类                calcs[i] = new Calculator(mevents[i]);                //开始一个任务                tf.StartNew(calcs[i].Calculation, Tuple.Create(i + 1, i + 3));            }            //Thread.Sleep(5000);            Console.Write("task is running\r\n");            for (int i = 0; i < taskcount; i++)            {                //返回执行完操作的等待数组的索引，根据索引得到具体事件，然后由该事件发出Reset信号                int index = WaitHandle.WaitAny(waithandles);                if (index == WaitHandle.WaitTimeout)                {                    Console.Write("timeout\r\n");                }                else                {                    mevents[index].Reset();                    Console.Write("finished task for {0}\r\n", calcs[index].TaskID);                }            }            Console.ReadKey(true);        }    }    public class Calculator    {        //记录事件状态        private ManualResetEventSlim mevent;        public int? TaskID { get; private set; }        public Calculator(ManualResetEventSlim ev)        {            this.mevent = ev;        }        public void Calculation(object obj)        {            Tuple<int, int> data = http://www.mamicode.com/(Tuple)obj;"Task {0} starts calculation\r\n", Task.CurrentId);            Thread.Sleep(new Random().Next(3000));            TaskID = Task.CurrentId;            Console.Write("Task {0} is ready\r\n", Task.CurrentId);            mevent.Set();        }    }}