Silverlight 4中的调度员正在浪费时间-什么更准确?

我有一个 poker blind timer

我在我的锦标赛类中使用了一个dispatcher计时器,每次我都会引发一个事件,UI订阅该事件来更新屏幕(带有一个数据绑定的Textblock)。然后我做检查,看看盲人是否已经结束,或者是否还有60秒等:

private DispatcherTimer timerBlind;


        if (timerBlind == null)
        {
            timerBlind = new DispatcherTimer();
            timerBlind.Interval = TimeSpan.FromSeconds(1);
            timerBlind.Tick += new EventHandler(Timer_Tick);
        }

  void Timer_Tick(object sender, EventArgs e)
    {
        //check if this would be the end of the blind or other key events
        OnTimerTick(new EventArgs());

        BlindSet.TotalTimeRunning = BlindSet.TotalTimeRunning.Add(TimeSpan.FromSeconds(1));

        if (IsTimerBlindRunning)
        {
            BlindSet.TimeLeftInCurrentBlind = BlindSet.TimeLeftInCurrentBlind.Add(TimeSpan.FromSeconds(-1));

            if (BlindSet.TimeLeftInCurrentBlind.TotalSeconds == 0)
            {
                //advance the level = blinds have gone up
                blindset.EndOfBlindGoToNextLevel();
            }
        }
    }