public class Program
  {
    public static void Main(string[] args)
    {
      Action<int, int> a = add;
      a.BeginInvoke(3, 4, null, null);
      Console.WriteLine("執(zhí)行線程");
      Console.ReadKey();
    }
    static void add(int a, int b)
    {
      Console.WriteLine(a + b);
    }
  }

public class Program
  {
    public static void Main(string[] args)
    {
      Thread t1;
      Thread t2;
      t1 = new Thread(SetInfo1);
      t2 = new Thread(SetInfo2);
      t1.Start();
      //線程睡眠
      //t1.Join(1000);
      //掛起線程
      t1.Suspend();
      //繼續(xù)執(zhí)行線程
      t1.Resume();
      //結(jié)束線程
      //t1.Abort();
 
      t2.Start();
      Console.ReadKey();
    }
    //奇數(shù)線程
    public static void SetInfo1()
    {
      for (int i = 0; i < 100; i++)
      {
        if (i % 2 != 0)
        {
          Console.WriteLine("奇數(shù)為" + i);
        }
      }
    }
    //偶數(shù)線程
    public static void SetInfo2()
    {
      for (int i = 0; i < 100; i++)
      {
        if (i % 2 == 0)
        {
          Console.WriteLine("偶數(shù)為" + i);
        }
      }
    }
  }

//線程池可以看做容納線程的容器；一個(gè)應(yīng)用程序最多只能有一個(gè)線程池；ThreadPool靜態(tài)類通過(guò)QueueUserWorkItem()方法將工作函數(shù)排入線程池；每排入一個(gè)工作函數(shù)，就相當(dāng)于請(qǐng)求創(chuàng)建一個(gè)線程；
  //線程池的作用：
  //1、線程池是為突然大量爆發(fā)的線程設(shè)計(jì)的，通過(guò)有限的幾個(gè)固定線程為大量的操作服務(wù)，減少了創(chuàng)建和銷毀線程所需的時(shí)間，從而提高效率。
  //2、如果一個(gè)線程的時(shí)間非常長(zhǎng)，就沒(méi)必要用線程池了(不是不能作長(zhǎng)時(shí)間操作，而是不宜。)，況且我們還不能控制線程池中線程的開始、掛起、和中止
  public class Program
  {
    public static void Main(string[] args)
    {
      ThreadPool.QueueUserWorkItem(new WaitCallback(TestThreadPool), new string[] { "hjh" });
      Console.ReadKey();
    }
    public static void TestThreadPool(object state)
    {
      string[] arry = state as string[];//傳過(guò)來(lái)的參數(shù)值
      int workerThreads = 0;
      int CompletionPortThreads = 0;
      ThreadPool.GetMaxThreads(out workerThreads, out CompletionPortThreads);
      Console.WriteLine(DateTime.Now.ToString() + "---" + arry[0] + "--workerThreads=" + workerThreads + "--CompletionPortThreads" + CompletionPortThreads);
    }
  }

public class Program
  {
    public static void Main(string[] args)
    {
      Task task = new Task(DownLoadFile_My);
      task.Start();
      Console.ReadKey();
    }
    static void DownLoadFile_My()
    {
      Console.WriteLine("開始下載...線程ID:"+Thread.CurrentThread.ManagedThreadId);
      Thread.Sleep(500);
      Console.WriteLine("下載完成!");
    }
  }