异步委托实例

using System;

using System.Threading;

  public delegate string AdviseDelegate(int score);

public class Student

{

 private int score;

 

 

 public void SetScore(int value)

 {

  if (value > 100 || value < 0)

  {

   Console.Out.WriteLine("分数不对");

  }

  else

  {

   score = value;

   if (AdviseDelegateInstance!= null)

   {

    AdviseDelegateInstance.BeginInvoke(score, new System.AsyncCallback(CallBackMethod),"idior");

   }

  }

 }

 

 private void CallBackMethod(IAsyncResult asyncResult)

 {      string result = AdviseDelegateInstance.EndInvoke(asyncResult);

  string stateObj=(string)asyncResult.AsyncState;

 

  Console.Out.WriteLine("学生{0}收到老师返回的结果/t" + result,stateObj);

 }