Convert a two digit year to a four digit year

Question

This is a question of best practices. I have a utility that takes in a two digit year as a string and I need to convert it to a four digit year as a string. right now I do <

Answer 1

My answer will not match your question but for credit cards I just add 2 digits of current year

    private int UpconvertTwoDigitYearToFour(int yearTwoOrFour)
    {
        try
        {
            if (yearTwoOrFour.ToString().Length <= 2)
            {
                DateTime yearOnly = DateTime.ParseExact(yearTwoOrFour.ToString("D2"), "yy", null);
                return yearOnly.Year;
            }
        }
        catch
        {
        }

        return yearTwoOrFour;
    }