private static void ApplyDateFormat(System.Windows.Controls.DatePicker datePicker)
{
var binding = new Binding("SelectedDate")
{
RelativeSource = new RelativeSource {
AncestorType = typeof(System.Windows.Controls.DatePicker)
},
Converter = new DatePickerDateTimeConverter(),
ConverterParameter = new Tuple <System.Windows.Controls.DatePicker, string>(datePicker, GetDateFormat(datePicker)),
StringFormat = GetDateFormat(datePicker) // This is also new but didnt seem to help
};
var textBox = GetTemplateTextBox(datePicker);
textBox.SetBinding(TextBox.TextProperty, binding);
textBox.PreviewKeyDown -= TextBoxOnPreviewKeyDown;
textBox.PreviewKeyDown += TextBoxOnPreviewKeyDown;
var dropDownButton = GetTemplateButton(datePicker);
datePicker.CalendarOpened -= DatePickerOnCalendarOpened;
datePicker.CalendarOpened += DatePickerOnCalendarOpened;
// Handle Dropdownbutton PreviewMouseUp to prevent issue of flickering textboxes
dropDownButton.PreviewMouseUp -= DropDownButtonPreviewMouseUp;
dropDownButton.PreviewMouseUp += DropDownButtonPreviewMouseUp;
}
public static DateTime?StringToDateTime(System.Windows.Controls.DatePicker datePicker, string formatStr, string dateStr)
{
DateTime date;
var canParse = DateTime.TryParseExact(dateStr, formatStr, CultureInfo.CurrentCulture,
DateTimeStyles.None, out date);
if (!canParse)
{
canParse = DateTime.TryParse(dateStr, CultureInfo.CurrentCulture, DateTimeStyles.None, out date);
}
return(canParse ? date : datePicker.SelectedDate);
}
private static void SetCalendarEventHandlers(System.Windows.Controls.DatePicker datePicker, DependencyPropertyChangedEventArgs e)
{
if (e.NewValue == e.OldValue)
{
return;
}
if ((bool)e.NewValue)
{
datePicker.CalendarOpened += DatePickerOnCalendarOpened;
datePicker.CalendarClosed += DatePickerOnCalendarClosed;
}
else
{
datePicker.CalendarOpened -= DatePickerOnCalendarOpened;
datePicker.CalendarClosed -= DatePickerOnCalendarClosed;
}
}
private static ButtonBase GetTemplateButton(System.Windows.Controls.DatePicker datePicker)
{
return((ButtonBase)datePicker.Template.FindName("PART_Button", datePicker));
}
