private static void OnNullValueTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) { FXDatePicker datepicker = (FXDatePicker)d; if (!datepicker.SelectedDateTime.HasValue) { datepicker.DoFormat(null); } }
private static void OnSelectedDateTimeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) { FXDatePicker datepicker = (FXDatePicker)d; DateTime? oldValue = (DateTime?)e.OldValue; DateTime? newValue = (DateTime?)e.NewValue; //Invalid the IsValid and Text property when SelectedDateTime is changed datepicker.SetValue(IsValidPropertyKey, newValue.HasValue); datepicker.DoFormat(newValue); if (datepicker.MonthView != null) { datepicker.MonthView.SelectedDateTime = newValue; } RoutedPropertyChangedEventArgs <DateTime?> routedArgs = new RoutedPropertyChangedEventArgs <DateTime?>(oldValue, newValue, SelectedDateTimeChangedEvent); datepicker.OnSelectedDateTimeChanged(routedArgs); }