小编Cas*_*sey的帖子

为简单起见,我们有一个modelview(MyModelView),它包含一个Scheduler属性,里面有一个计时器(Scheduler).计时器用于检查当前时间,如果它们匹配,则发出"事件匹配"信号,表示模型视图应以某种方式通知.现在MyModelView知道调度程序,但不是相反.

public Scheduler()
    {
        ScheduleCollection = new ObservableCollection<Schedule>();

        TimeSpan ts = new TimeSpan(30000);

        _timer = new DispatcherTimer();
        _timer.Interval = ts;
        _timer.Tick += new EventHandler(EventTimerCheck_Tick);
        _timer.Start();

    }
private void EventTimerCheck_Tick(object sender, EventArgs e) 
    {
        eventsToLaunch = LocateCurrentEvents();

        if (eventsToLaunch.Count > 0) { RaiseHasEvents(); }
    }

public void RaiseHasEvents()
    {
       EventHandler handler = this.HasEvents;
        if (handler != null)
        {
            var e = new EventArgs();
            handler(this, e);
        }
    }

public event EventHandler HasEvents;

public MyModelView()
   {

       Scheduler scheduler = new Scheduler();

       HaveEvents += …