DoFormat() private méthode

private DoFormat ( System.DateTime date ) : string
date System.DateTime
Résultat string
        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);
        }