private void CalendarUwp_SelectedDatesChanged(object sender, SelectedDatesChangedEventArgs e)
{
if (e.SelectedDates.Count > 0)
{
SelectedDate = e.SelectedDates.FirstOrDefault().DateTime;
txtDate.Text = SelectedDate.ToShortDateString();
}
}
protected virtual void OnSelectedDatesChanged(SelectedDatesChangedEventArgs e)
{
SelectedDatesChanged?.Invoke(this, e);
}