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using System;
using System.Threading;

namespace 线程池
{
class Program
{
static void ThreadMethod(object state)
{
Console.WriteLine("线程开始"+Thread .CurrentThread .ManagedThreadId);
Thread.Sleep(2000);
Console.WriteLine("线程结束");
}

    static void Main(string[] args)
    {
        ThreadPool.QueueUserWorkItem(ThreadMethod);//开启一个工作线程（适合耗时较短的任务）
        ThreadPool.QueueUserWorkItem(ThreadMethod);
        ThreadPool.QueueUserWorkItem(ThreadMethod);
        ThreadPool.QueueUserWorkItem(ThreadMethod);
        ThreadPool.QueueUserWorkItem(ThreadMethod);
        Console.ReadKey();


    }
}

}
//-------------------------------------------------------------------------
using System;
using System.Threading;
using System.Threading.Tasks;

namespace Task类开启线程
{
class Program
{
static void ThreadMethod()
{
Console.WriteLine("线程开始" + Thread.CurrentThread.ManagedThreadId);
Thread.Sleep(2000);
Console.WriteLine("线程结束");
}

    static void Main(string[] args)
    {
        //1.开启方式
        /*Task t = new Task(ThreadMethod);
        t.Start();*/

        //2.开启方式
        /*TaskFactory tf = new TaskFactory();
        Task t = tf.StartNew(ThreadMethod);*/

        Console.WriteLine("Main");
        Console.ReadKey();
    }
}

}