public static class Validator { /// <summary> /// 数字 /// </summary> /// <param name="value"></param> /// <returns></returns> public static bool IsNumber(string value) { return IsMatch(@"^[0-9]*$", value); } /// <summary> /// 非零正整数 /// </summary> /// <param name="value"></param> /// <returns></returns> public static bool IsInt(string value) { return IsMatch(@"^\+?[1-9][0-9]*$", value); } /// <summary> /// 零和非零开头的数字(包含0的正整数) /// </summary> /// <param name="value"></param> /// <returns></returns> public static bool IsZeroInt(string value) { return IsMatch(@"^(0|[1-9][0-9]*)$", value); } /// <summary> /// 26个英文字母、数字、下划线组成的字符串 /// </summary> /// <param name="value"></param> /// <returns></returns> public static bool IsLimitString(string value) { return IsMatch(@"^[a-zA-Z][a-zA-Z0-9_]*$", value); } /// <summary> /// 电子邮箱 /// </summary> /// <param name="value"></param> /// <returns></returns> public static bool IsEmail(string value) { return IsMatch(@"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$", value); } /// <summary> /// 身份证号码 /// </summary> /// <param name="value"></param> /// <returns></returns> public static bool IsIdentify(string value) { return IsMatch(@"^(\d{15}$|^\d{18}$|^\d{17}(\d|X|x))$", value); } /// <summary> /// 手机号码 /// </summary> /// <param name="value"></param> /// <returns></returns> public static bool IsMobile(string value) { return IsMatch(@"^(13[0-9]|15[0|3|6|7|8|9]|18[8|9])\d{8}$", value); } /// <summary> /// 电话号码 /// </summary> /// <param name="value"></param> public static bool IsPhone(string value) { return IsMatch(@"^(0[0-9]{2,3}-)?([2-9][0-9]{6,7})+(-[0-9]{1,4})?$", value); } /// <summary> /// 字符串长度验证(是否超过指定最大长度) /// </summary> /// <param name="value"></param> /// <param name="maxLength"></param> /// <returns></returns> public static bool IsMaxLength(string value, int maxLength) { if (string.IsNullOrEmpty(value)) return false; //用字节长度比较,而不是字符长度 return System.Text.Encoding.Default.GetByteCount(value) > maxLength; } private static bool IsMatch(string expression, string value) { Regex reg = new Regex(expression); return reg.IsMatch(value); } }