using System.Text; using System.Text.RegularExpressions; namespace MyHelper4Web { /// <summary> /// 常用验证操作类 /// </summary> public class MyValidateHelper { #region Public Fields private static readonly Regex RegNumber = new Regex("^[0-9]+$"); private static readonly Regex RegNumberSign = new Regex("^[+-]?[0-9]+$"); private static readonly Regex RegDecimal = new Regex("^[0-9]+[.]?[0-9]+$"); private static readonly Regex RegDecimalSign = new Regex("^[+-]?[0-9]+[.]?[0-9]+$"); //等价于^[+-]?\d+[.]?\d+$ private static readonly Regex RegEmail = new Regex(@"^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$"); //w 英文字母或数字的字符串，和 [a-zA-Z0-9] 语法一样 private static readonly Regex RegCHZN = new Regex("[\u4e00-\u9fa5]"); #endregion #region 用户名密码格式 /// <summary> /// 返回字符串真实长度, 1个汉字长度为2 /// </summary> /// <param name="stringValue">字符串</param> /// <returns>字符长度</returns> public static int GetStringLength(string stringValue) { return Encoding.Default.GetBytes(stringValue).Length; } /// <summary> /// 检测用户名格式是否有效 /// </summary> /// <param name="userName">用户名</param> /// <returns>返回值</returns> public static bool IsValidUserName(string userName) { int userNameLength = GetStringLength(userName); if (userNameLength >= 4 && userNameLength <= 20 && Regex.IsMatch(userName, @"^([\u4e00-\u9fa5A-Za-z_0-9]{0,})$")) { // 判断用户名的长度（4-20个字符）及内容（只能是汉字、字母、下划线、数字）是否合法 return true; } return false; } /// <summary> /// 密码有效性 /// </summary> /// <param name="password">密码</param> /// <returns>返回值</returns> public static bool IsValidPassword(string password) { return Regex.IsMatch(password, @"^[A-Za-z_0-9]{6,16}$"); } #endregion #region 数字字符串检查 /// <summary> /// int有效性 /// </summary> /// <param name="val">字符串</param> /// <returns>返回值</returns> public static bool IsValidInt(string val) { return Regex.IsMatch(val, @"^[1-9]\d*\.?[0]*$"); } /// <summary> /// 是否数字字符串 /// </summary> /// <param name="inputData">输入字符串</param> /// <returns>返回值</returns> public static bool IsNumber(string inputData) { Match m = RegNumber.Match(inputData); return m.Success; } /// <summary> /// 是否数字字符串 可带正负号 /// </summary> /// <param name="inputData">输入字符串</param> /// <returns>返回值</returns> public static bool IsNumberSign(string inputData) { Match m = RegNumberSign.Match(inputData); return m.Success; } /// <summary> /// 是否是浮点数 /// </summary> /// <param name="inputData">输入字符串</param> /// <returns>返回值</returns> public static bool IsDecimal(string inputData) { Match m = RegDecimal.Match(inputData); return m.Success; } /// <summary> /// 是否是浮点数 可带正负号 /// </summary> /// <param name="inputData">输入字符串</param> /// <returns>返回值</returns> public static bool IsDecimalSign(string inputData) { Match m = RegDecimalSign.Match(inputData); return m.Success; } #endregion #region 中文检测 /// <summary> /// 检测是否有中文字符 /// </summary> /// <param name="inputData">输入字符串</param> /// <returns>返回值</returns> public static bool IsHasCHZN(string inputData) { Match m = RegCHZN.Match(inputData); return m.Success; } /// <summary> /// 检测含有中文字符串的实际长度 /// </summary> /// <param name="inputData">输入字符串</param> /// <returns>返回值</returns> public static int GetCHZNLength(string inputData) { var n = new ASCIIEncoding(); byte[] bytes = n.GetBytes(inputData); int length = 0; // l 为字符串之实际长度 for (int i = 0; i <= bytes.Length - 1; i++) { if (bytes[i] == 63) //判断是否为汉字或全脚符号 { length++; } length++; } return length; } #endregion #region 常用格式 /// <summary> /// 验证身份证是否合法 15 和 18位两种 /// </summary> /// <param name="idCard">要验证的身份证</param> /// <returns>返回值</returns> public static bool IsIdCard(string idCard) { if (string.IsNullOrEmpty(idCard)) { return false; } if (idCard.Length == 15) { return Regex.IsMatch(idCard, @"^[1-9]\d{7}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])\d{3}$"); } if (idCard.Length == 18) { return Regex.IsMatch(idCard, @"^[1-9]\d{5}[1-9]\d{3}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])((\d{4})|\d{3}[A-Z])$", RegexOptions.IgnoreCase); } return false; } /// <summary> /// 是否是邮件地址 /// </summary> /// <param name="inputData">输入字符串</param> /// <returns>返回值</returns> public static bool IsEmail(string inputData) { Match m = RegEmail.Match(inputData); return m.Success; } /// <summary> /// 邮编有效性 /// </summary> /// <param name="zip">输入字符串</param> /// <returns>返回值</returns> public static bool IsValidZip(string zip) { var rx = new Regex(@"^\d{6}$", RegexOptions.None); Match m = rx.Match(zip); return m.Success; } /// <summary> /// 固定电话有效性 /// </summary> /// <param name="phone">输入字符串</param> /// <returns>返回值</returns> public static bool IsValidPhone(string phone) { var rx = new Regex(@"^(\(\d{3,4}\)|\d{3,4}-)?\d{7,8}$", RegexOptions.None); Match m = rx.Match(phone); return m.Success; } /// <summary> /// 手机有效性 /// </summary> /// <param name="mobile">输入字符串</param> /// <returns>返回值</returns> public static bool IsValidMobile(string mobile) { var rx = new Regex(@"^(13|15)\d{9}$", RegexOptions.None); Match m = rx.Match(mobile); return m.Success; } /// <summary> /// 电话有效性（固话和手机 ） /// </summary> /// <param name="number">输入字符串</param> /// <returns>返回值</returns> public static bool IsValidPhoneAndMobile(string number) { var rx = new Regex(@"^(\(\d{3,4}\)|\d{3,4}-)?\d{7,8}$|^(13|15)\d{9}$", RegexOptions.None); Match m = rx.Match(number); return m.Success; } /// <summary> /// Url有效性 /// </summary> /// <param name="url">输入字符串</param> /// <returns>返回值</returns> public static bool IsValidURL(string url) { return Regex.IsMatch(url, @"^(http|https|ftp)\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&%\$#\=~])*[^\.\,\)\(\s]$"); } /// <summary> /// IP有效性 /// </summary> /// <param name="ip">输入字符串</param> /// <returns>返回值</returns> public static bool IsValidIP(string ip) { return Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$"); } /// <summary> /// domain 有效性 /// </summary> /// <param name="host">域名</param> /// <returns>返回值</returns> public static bool IsValidDomain(string host) { var r = new Regex(@"^\d+$"); if (host.IndexOf(".") == -1) { return false; } return !r.IsMatch(host.Replace(".", string.Empty)); } /// <summary> /// 判断是否为base64字符串 /// </summary> /// <param name="str">输入字符串</param> /// <returns>返回值</returns> public static bool IsBase64String(string str) { return Regex.IsMatch(str, @"[A-Za-z0-9\+\/\=]"); } /// <summary> /// 验证字符串是否是GUID /// </summary> /// <param name="guid">字符串</param> /// <returns>返回值</returns> public static bool IsGuid(string guid) { if (string.IsNullOrEmpty(guid)) return false; return Regex.IsMatch(guid, "[A-F0-9]{8}(-[A-F0-9]{4}){3}-[A-F0-9]{12}|[A-F0-9]{32}", RegexOptions.IgnoreCase); } #endregion #region 日期检查 /// <summary> /// 判断输入的字符是否为日期 /// </summary> /// <param name="strValue">输入字符串</param> /// <returns>返回值</returns> public static bool IsDate(string strValue) { return Regex.IsMatch(strValue, @"^((\d{2}(([02468][048])|([13579][26]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|([1-2][0-9])))))|(\d{2}(([02468][1235679])|([13579][01345789]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))"); } /// <summary> /// 判断输入的字符是否为日期,如2004-07-12 14:25|||1900-01-01 00:00|||9999-12-31 23:59 /// </summary> /// <param name="strValue">输入字符串</param> /// <returns>返回值</returns> public static bool IsDateHourMinute(string strValue) { return Regex.IsMatch(strValue, @"^(19[0-9]{2}|[2-9][0-9]{3})-((0(1|3|5|7|8)|10|12)-(0[1-9]|1[0-9]|2[0-9]|3[0-1])|(0(4|6|9)|11)-(0[1-9]|1[0-9]|2[0-9]|30)|(02)-(0[1-9]|1[0-9]|2[0-9]))\x20(0[0-9]|1[0-9]|2[0-3])(:[0-5][0-9]){1}$"); } #endregion #region 其他 /// <summary> /// 检查字符串最大长度，返回指定长度的串 /// </summary> /// <param name="inputData">输入字符串</param> /// <param name="maxLength">最大长度</param> /// <returns>返回值</returns> public static string CheckMathLength(string inputData, int maxLength) { if (!string.IsNullOrEmpty(inputData)) { inputData = inputData.Trim(); if (inputData.Length > maxLength) //按最大长度截取字符串 { inputData = inputData.Substring(0, maxLength); } } return inputData; } /// <summary> /// 转换成 HTML code /// </summary> /// <param name="str">输入字符串</param> /// <returns>返回值</returns> public static string Encode(string str) { str = str.Replace("&", "&"); str = str.Replace("'", "''"); str = str.Replace("\"", """); str = str.Replace(" ", " "); str = str.Replace("<", "<"); str = str.Replace(">", ">"); str = str.Replace("\n", "<br>"); return str; } /// <summary> ///解析html成 普通文本 /// </summary> /// <param name="str">输入字符串</param> /// <returns>返回值</returns> public static string Decode(string str) { str = str.Replace("<br>", "\n"); str = str.Replace(">", ">"); str = str.Replace("<", "<"); str = str.Replace(" ", " "); str = str.Replace(""", "\""); return str; } #endregion } }