/// 

        /// Uses regular expressions to determine if the string matches to a given regex pattern.
        /// 
        /// The input string.
        /// The regular expression pattern.
        /// The regular expression options.
        /// 
        ///    true if the value is matching to the specified pattern; otherwise, false.
        /// 
        /// 
        /// 
        /// var s = "12345";
        /// var isMatching = s.IsMatchingTo(@"^\d+$");
        /// 
        /// 
        public static bool IsMatchingTo(this string value, string regexPattern, RegexOptions options)
        {
            return Regex.IsMatch(value, regexPattern, options);
        }