c# 正则表达式验证手机号，电话号码

直接上代码

代码如下：

        /// <summary>
        /// 验证电话号码
        /// </summary>
        /// <param name=""></param>
        /// <returns></returns>
        public static bool IsTel(string telephoneNumber)
        {
            return System.Text.RegularExpressions.Regex.IsMatch(telephoneNumber, @"^(\d{3,4}-)?\d{6,8}$");
        }

        /// <summary>
        /// 验证手机号码
        /// </summary>
        /// <param name="str_handset"></param>
        /// <returns></returns>
        public static bool IsMobile(string mobile)
        {
            if (string.IsNullOrEmpty(mobile))
                return false;
            return Regex.IsMatch(mobile, @"^(1)\d{10}$");
        }

        /// <summary>
        /// 验证输入为数字
        /// </summary>
        /// <param name=""></param>
        /// <returns></returns>
        public static bool IsNumber(string str_number)
        {
            return System.Text.RegularExpressions.Regex.IsMatch(str_number, @"^[0-9]*$");
        }