class Program
 {

  static void Main()
  {
   Request req = new Request();

   //这个人去干三件大事 
   Thread GetCarThread = new Thread(new ThreadStart(req.InterfaceA));
   GetCarThread.Start();

   Thread GetHouseThead = new Thread(new ThreadStart(req.InterfaceB));
   GetHouseThead.Start();

   //等待三件事都干成的喜讯通知信息 
   AutoResetEvent.WaitAll(req.autoEvents);

   //这个人就开心了。 
   req.InterfaceC();

   System.Console.ReadKey();
  }
 }

 public class Request
 {
  //建立事件数组 
  public AutoResetEvent[] autoEvents = null;

  public Request()
  {
   autoEvents = new AutoResetEvent[]
   {
    new AutoResetEvent(false),
    new AutoResetEvent(false)
   };
  }

  public void InterfaceA()
  {
   System.Console.WriteLine("请求A接口");

   Thread.Sleep(1000*2);

   autoEvents[0].Set();

   System.Console.WriteLine("A接口完成");
  }

  public void InterfaceB()
  {
   System.Console.WriteLine("请求B接口");

   Thread.Sleep(1000 * 1);

   autoEvents[1].Set();

   System.Console.WriteLine("B接口完成");
  }

  public void InterfaceC()
  {
   System.Console.WriteLine("两个接口都已经请求完，正在处理C");
  }
 }