Fan.Sys.DateTimeStr.weekOfYear C# (CSharp) Méthode

        private int weekOfYear()
        {
            Weekday sow = Weekday.localeStartOfWeek(locale());
              if (val is DateTime) return (int)((DateTime)val).weekOfYear(sow);
              if (val is Date) return (int)((Date)val).weekOfYear(sow);
              return 0;
        }