private void TaskCalendarView_SelectedDatesChanged(CalendarView sender, CalendarViewSelectedDatesChangedEventArgs args)
        {
            if (ViewModel.CurrentBoard != null)
            {
                if (sender.SelectedDates != null && sender.SelectedDates.Count != 0)
                {
                    // Work-around: Fix using the AttachedProperty SelectedDate
                    CalendarViewModel.SelectedDate = sender.SelectedDates.First();
                }

                CalendarViewModel.ScheudledTasks = CalendarViewModel.GetAvailableTasks(ViewModel.CurrentBoard.Board);
            }
        }