TryParseDateTimeExact() private static method

private static TryParseDateTimeExact ( string text, DateTimeZoneHandling dateTimeZoneHandling, string dateFormatString, CultureInfo culture, System.DateTime &dt ) : bool
text string
dateTimeZoneHandling DateTimeZoneHandling
dateFormatString string
culture System.Globalization.CultureInfo
dt System.DateTime
return bool
 internal static bool TryParseDateTime(
     string s,
     DateTimeZoneHandling dateTimeZoneHandling,
     string dateFormatString,
     CultureInfo culture,
     out DateTime dt)
 {
     if (s.Length > 0)
     {
         if (s[0] == '/')
         {
             if (s.Length >= 9 && s.StartsWith("/Date(", StringComparison.Ordinal) && (s.EndsWith(")/", StringComparison.Ordinal) && DateTimeUtils.TryParseDateTimeMicrosoft(new StringReference(s.ToCharArray(), 0, s.Length), dateTimeZoneHandling, out dt)))
             {
                 return(true);
             }
         }
         else if (s.Length >= 19 && s.Length <= 40 && (char.IsDigit(s[0]) && s[10] == 'T') && DateTime.TryParseExact(s, "yyyy-MM-ddTHH:mm:ss.FFFFFFFK", (IFormatProvider)CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind, out dt))
         {
             dt = DateTimeUtils.EnsureDateTime(dt, dateTimeZoneHandling);
             return(true);
         }
         if (!string.IsNullOrEmpty(dateFormatString) && DateTimeUtils.TryParseDateTimeExact(s, dateTimeZoneHandling, dateFormatString, culture, out dt))
         {
             return(true);
         }
     }
     dt = new DateTime();
     return(false);
 }
 internal static bool TryParseDateTime(
     StringReference s,
     DateTimeZoneHandling dateTimeZoneHandling,
     string dateFormatString,
     CultureInfo culture,
     out DateTime dt)
 {
     if (s.Length > 0)
     {
         int startIndex = s.StartIndex;
         if (s[startIndex] == '/')
         {
             if (s.Length >= 9 && s.StartsWith("/Date(") && (s.EndsWith(")/") && DateTimeUtils.TryParseDateTimeMicrosoft(s, dateTimeZoneHandling, out dt)))
             {
                 return(true);
             }
         }
         else if (s.Length >= 19 && s.Length <= 40 && (char.IsDigit(s[startIndex]) && s[startIndex + 10] == 'T') && DateTimeUtils.TryParseDateTimeIso(s, dateTimeZoneHandling, out dt))
         {
             return(true);
         }
         if (!string.IsNullOrEmpty(dateFormatString) && DateTimeUtils.TryParseDateTimeExact(s.ToString(), dateTimeZoneHandling, dateFormatString, culture, out dt))
         {
             return(true);
         }
     }
     dt = new DateTime();
     return(false);
 }