public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null)
            {
                if (parameter != null)
                {
                    return((int)parameter);
                }
                return(new ValidationResult(false, "Cannot convert back null."));
            }

            if (value.ToString() == "727 WYSI")
            {
                return(727);
            }

            if (parameter == null)
            {
                if (TypeConverters.TryParseInt(value.ToString(), out int result1))
                {
                    return(result1);
                }

                return(new ValidationResult(false, "Int format error."));
            }
            TypeConverters.TryParseInt(value.ToString(), out int result2, int.Parse(parameter.ToString()));
            return(result2);
        }