C#委托事件实例

 

public delegate void TimeoutHandler（int connectID）;

public class UserOnLineChecker

{

　　public event TimeoutHandler SomeConnectionTimeOuted;

　　private Timer timerForCheckOnLine;

　　public UserOnLineChecker()

　　{

　　　　this.SomeConnectionTimeOuted = null;

　　}

　　private void OnLineCheckAction(object state)
      {

　　　　if (this.SomeConnectionTimeOuted != null)
            {
                this.SomeConnectionTimeOuted(state as int);
            }

　　}

　　public void Start()
       {
            this.timerForCheckOnLine = new Timer(new TimerCallback(this.OnLineCheckAction), null, 3* 60000, 3 * 60000);
        }

}

调用：

 

public class UserLogin

{

　　private UserOnLineChecker tcpUserOnLineChecker;

　　public UserLogin()

　　{

　　　　 　this.tcpUserOnLineChecker = new UserOnLineChecker();
                //this.tcpUserOnLineChecker.Initialize(this.onLineCheckSpan);
                this.tcpUserOnLineChecker.SomeConnectionTimeOuted += new TimeoutHandler(this.tcpUserOnLineChecker_SomeConnectionTimeOuted);

　　}

　　private void tcpUserOnLineChecker_SomeConnectionTimeOuted(int connectID)
        {

　　　　　　//处理回调事件
          }

　　public void Start()
        {
            this.tcpUserOnLineChecker.Start();//调用UserOnLineChecker类中委托注册事件方法
        }

}