private static bool VerifyDateTimeNullable(string value, out string message) { if (value.Trim().Length == 0) { message = ""; return(true); } return(CellCheckerFactory.VerifyDateTime(value, out message)); }
public static CellChecker StringChecker(int maxLength, bool allowNull) { return(CellCheckerFactory.StringChecker(maxLength, allowNull ? 0 : 1)); }