Checks to see if a string contains a special character

containsSpecialCharacterFunct.cs

        public static ValidationResult ContainsSpecChar(string sampleStr)
        {
            Regex specChar = new Regex(@"[^A-Za-z0-9!?.&,\ -]", RegexOptions.IgnorePatternWhitespace);
            MatchCollection matches = specChar.Matches(sampleStr);

            if (matches.Count > 0)
            {
                return new ValidationResult("Message cannot contain special characters.");
            }
            return ValidationResult.Success;

        }