private void RegisterLineChartTimer()
		{
			dispatcherTimer = new SmartDispatcherTimer();
			dispatcherTimer.IsReentrant = false;
			dispatcherTimer.Interval = TimeSpan.FromSeconds(1);
			dispatcherTimer.TickTask = () =>
				{
					UpdateGUI();
				};
		  dispatcherTimer.Start();
		}
		private void RegisterTimer() 
		{
			timer = new SmartDispatcherTimer();
			timer.IsReentrant = false;
			timer.Interval = TimeSpan.FromSeconds(20);
			timer.TickTask = async () =>
			{
				await CheckServiceChanged();
			};
			timer.Start();
		}