public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            var      cParam   = parameter as DateConverterParameter;
            DateTime?dateTime = DateTimePickerHelper.ReadValueFromProperty(value, cParam);

            return(dateTime);
        }
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            var cParam = parameter as DateConverterParameter;

            return(DateTimePickerHelper.ReadValueFromControl((DateTime?)value, cParam));
        }