C#后台正则表达式

        static Regex RegPhone = new Regex(@"^((1[34578][0-9]{1}))d{8}");
        static Regex RegNumber = new Regex(@"^[0-9]+$");
        static Regex RegNumberSign = new Regex(@"^[+-]?[0-9]+$");
        static Regex RegDecimal = new Regex(@"^[0-9]+[.]?[0-9]+$");
        static Regex RegDecimalSign = new Regex(@"^[+-]?[0-9]+[.]?[0-9]+$"); //等价于^[+-]?d+[.]?d+$
        static Regex RegEmail = new Regex(@"^[\w-]+@[\w-]+\.(com|net|org|edu|mil|tv|biz|info)$");//w 英文字母或数字的字符串，和 [a-zA-Z0-9] 语法一样
        static Regex RegCHZN = new Regex(@"[u4e00-u9fa5]");

例：  /// <summary>
        /// 是否数字字符串
        /// </summary>
        /// <param name="inputData">输入字符串</param>
        /// <returns></returns>
        public static bool IsNumber(string inputData)
        {
            Match m = RegNumber.Match(inputData);
            return m.Success;
        }