private void DateDisplay_LostFocus(object sender, RoutedEventArgs e)
{
DateTime result;
while ((!DateTime.TryParse(DateDisplay.Text, out result) ||
(Convert.ToDateTime(DateDisplay.Text) < MinimumDate) ||
(Convert.ToDateTime(DateDisplay.Text) > MaximumDate)) &&
DateDisplay.CanUndo)
{
DateDisplay.Undo();
}
if (DateTime.TryParse(DateDisplay.Text, out result) &&
SelectedDate != Convert.ToDateTime(DateDisplay.Text))
{
SelectedDate = Convert.ToDateTime(DateDisplay.Text);
}
}
private void UserControl_PreviewKeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Escape || e.Key == Key.Back)
{
if (DateDisplay.Text.Length > 0)
{
DateDisplay.Text.Remove(DateDisplay.Text.Length - 1);
}
//DateDisplay.Clear();
return;
}
if (e.KeyboardDevice.Modifiers == ModifierKeys.Shift)
{
return;
}
DateTime dateResult;
var selstart = DateDisplay.SelectionStart;
while (!DateTime.TryParse(DateDisplay.Text, out dateResult))
{
DateDisplay.Undo();
}
e.Handled = true;
switch (e.Key)
{
case Key.Up:
SelectedDate = Increase(selstart, 1);
FocusOnDatePart(selstart);
break;
case Key.Down:
SelectedDate = Increase(selstart, -1);
FocusOnDatePart(selstart);
break;
case Key.Left:
selstart = SelectPreviousPosition(selstart);
if (selstart > -1)
{
FocusOnDatePart(selstart);
}
else
{
this.MoveFocus(new TraversalRequest(FocusNavigationDirection.Previous));
}
break;
case Key.Tab:
case Key.Right:
selstart = SelectNextPosition(selstart);
if (selstart > -1)
{
FocusOnDatePart(selstart);
}
else
{
PopUpCalendarButton.Focus();
}
break;
default:
try
{
if (!Char.IsDigit(Convert.ToChar(e.KeyboardDevice.ToString())))
{
if (e.Key == Key.D0 ||
e.Key == Key.D1 ||
e.Key == Key.D2 ||
e.Key == Key.D3 ||
e.Key == Key.D4 ||
e.Key == Key.D5 ||
e.Key == Key.D6 ||
e.Key == Key.D7 ||
e.Key == Key.D8 ||
e.Key == Key.D9)
{
e.Handled = false;
}
}
break;
}
catch { break; }
}
}
