void timer_Paused(object sender, TimerEventArgs e)
 {
     this.OnTimerChanged(e);
 }
 private void OnTimerChanged(TimerEventArgs e)
 {
     var tsFormat = FormatHelper.FormatTimeSpan(e.RemainingTime);
     this.Title = tsFormat + FormatHelper.GetStateString(this.timerState);
     this.lblMain.Content = tsFormat;
 }