.Net常用正则判断方法

原文:.Net常用正则判断方法

        /// <summary>
        ///  判断string类型否为数字
        /// </summary>
        /// <param name="strNumber"></param>
        /// <returns></returns>
        public static bool IsNumber(string strNumber)
        {
            string strValidRealPattern = "^([-]|[.]|[-.]|[0-9])[0-9]*[.]*[0-9]+$";
            string strValidIntegerPattern = "^([-]|[0-9])[0-9]*$";
            return !Regex.IsMatch(strNumber, "[^0-9.-]") &&
                   !Regex.IsMatch(strNumber, "[0-9]*[.][0-9]*[.][0-9]*") &&
                   !Regex.IsMatch(strNumber, "[0-9]*[-][0-9]*[-][0-9]*") &&
                   Regex.IsMatch(strNumber, "(" + strValidRealPattern + ")|(" + strValidIntegerPattern + ")");
        }

        /// <summary>
        /// 判断string类型否为正整数+0
        /// </summary>
        /// <param name="strNumber"></param>
        /// <returns></returns>
        public static bool IsPositive(string strNumber) => Regex.IsMatch(strNumber, "^\\d+$");

        /// <summary>
        /// 判断string类型否为金额
        /// </summary>
        /// <param name="strNumber"></param>
        /// <returns></returns>
        public static bool IsAmount(string strNumber) => Regex.IsMatch(strNumber, "^[0-9]+(.[0-9]{2})?$");

        /// <summary>
        /// 判断string类型否为手机号
        /// </summary>
        /// <param name="strPhone"></param>
        /// <returns></returns>
        public static bool IsPhone(string strPhone) => Regex.IsMatch(strPhone, "^0?(13[0-9]|15[012356789]|18[012356789]|14[012356789]|17[012356789])[0-9]{8}$");

        /// <summary>
        /// 判断string类型否为固定电话号
        /// </summary>
        /// <param name="strTel"></param>
        /// <returns></returns>
        public static bool IsTel(string strTel) => Regex.IsMatch(strTel, "^(0[0-9]{2,3}-)?([2-9][0-9]{6,7})+(-[0-9]{1,4})?$");

        /// <summary>
        /// 判断string类型否为邮编
        /// </summary>
        /// <param name="strZipCode"></param>
        /// <returns></returns>
        public static bool IsZipCode(string strZipCode) => Regex.IsMatch(strZipCode, "[0-9]{6}");

        /// <summary>
        /// 判断string类型否为Email
        /// </summary>
        /// <param name="strEmail"></param>
        /// <returns></returns>
        public static bool IsEmail(string strEmail) => Regex.IsMatch(strEmail, "\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*");

        /// <summary>
        /// 判断是否为日期
        /// </summary>
        /// <param name="dateStr"></param>
        /// <returns></returns>
        public static bool IsDateString(string dateStr) => DateTime.TryParse(dateStr, out var date);

原文地址：https://www.cnblogs.com/lonelyxmas/p/10474506.html