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using System.Text;using System.Text.RegularExpressions;
namespace NFine.Code{ public class Validate { private static Regex RegNumber = new Regex("^[0-9]+$"); private static Regex RegNumberSign = new Regex("^[+-]?[0-9]+$"); private static Regex RegDecimal = new Regex("^[0-9]+[.]?[0-9]+$"); private static Regex RegDecimalSign = new Regex("^[+-]?[0-9]+[.]?[0-9]+$"); //等价于^[+-]?\d+[.]?\d+$
private static Regex RegEmail = new Regex(@"^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$");//w 英文字母或数字的字符串，和 [a-zA-Z0-9] 语法一样
private static Regex RegCHZN = new Regex("[\u4e00-\u9fa5]");
#region 用户名密码格式
/// <summary>
/// 返回字符串真实长度, 1个汉字长度为2
/// </summary>
/// <returns>字符长度</returns>
public static int GetStringLength(string stringValue) { return Encoding.Default.GetBytes(stringValue).Length; }
/// <summary>
/// 检测用户名格式是否有效
/// </summary>
/// <param name="userName"></param>
/// <returns></returns>
public static bool IsValidUserName(string userName) { int userNameLength = GetStringLength(userName); if (userNameLength >= 4 && userNameLength <= 20 && Regex.IsMatch(userName, @"^([\u4e00-\u9fa5A-Za-z_0-9]{0,})$")) { // 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; } else { return false; } }
/// <summary>
/// 密码有效性
/// </summary>
/// <param name="password"></param>
/// <returns></returns>
public static bool IsValidPassword(string password) { return Regex.IsMatch(password, @"^[A-Za-z_0-9]{6,16}$"); } #endregion
#region 数字字符串检查
/// <summary>
/// int有效性
/// </summary>
/// <param name="val"></param>
/// <returns></returns>
static public bool IsValidInt(string val) { return Regex.IsMatch(val, @"^[1-9]\d*\.?[0]*$"); }
/// <summary>
/// 是否数字字符串
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></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></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></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></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"></param>
/// <returns></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="str">字符串</param>
public static int GetCHZNLength(string inputData) { System.Text.ASCIIEncoding n = new System.Text.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>
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}$"); } else if (idCard.Length == 18) { return Regex.IsMatch(idCard, @"^[1-9]\d{5}[1-9]\d{3}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])((\d{4})|\d{3}[A-Z])$", RegexOptions.IgnoreCase); } else { return false; } }
/// <summary>
/// 是否是邮件地址
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></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"></param>
/// <returns></returns>
public static bool IsValidZip(string zip) { Regex 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"></param>
/// <returns></returns>
public static bool IsValidPhone(string phone) { Regex rx = new Regex(@"^(\(\d{3,4}\)|\d{3,4}-)?\d{7,8}$", RegexOptions.None); Match m = rx.Match(phone); return m.Success; }
/// <summary>
/// 手机有效性
/// </summary>
/// <param name="strMobile"></param>
/// <returns></returns>
public static bool IsValidMobile(string mobile) { Regex rx = new Regex(@"^(13|15|17|18|19)\d{9}$", RegexOptions.None); Match m = rx.Match(mobile); return m.Success; }
/// <summary>
/// 电话有效性（固话和手机 ）
/// </summary>
/// <param name="strVla"></param>
/// <returns></returns>
public static bool IsValidPhoneAndMobile(string number) { Regex 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"></param>
/// <returns></returns>
static public 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]$"); }
/// <summary>
/// IP有效性
/// </summary>
/// <param name="ip"></param>
/// <returns></returns>
public static bool IsValidIP(string ip) { return Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$"); }
/// <summary>
/// domain 有效性
/// </summary>
/// <param name="host">域名</param>
/// <returns></returns>
public static bool IsValidDomain(string host) { Regex r = new Regex(@"^\d+$"); if (host.IndexOf(".") == -1) { return false; } return r.IsMatch(host.Replace(".", string.Empty)) ? false : true; }
/// <summary>
/// 判断是否为base64字符串
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static bool IsBase64String(string str) { return Regex.IsMatch(str, @"[A-Za-z0-9\+\/\=]"); }
/// <summary>
/// 验证字符串是否是GUID
/// </summary>
/// <param name="guid">字符串</param>
/// <returns></returns>
public static bool IsGuid(string guid) { if (string.IsNullOrEmpty(guid)) return false;
return Regex.IsMatch(guid, "[A-F0-9]{8}(-[A-F0-9]{4}){3}-[A-F0-9]{12}|[A-F0-9]{32}", RegexOptions.IgnoreCase); }
#endregion
#region 日期检查
/// <summary>
/// 判断输入的字符是否为日期
/// </summary>
/// <param name="strValue"></param>
/// <returns></returns>
public static bool IsDate(string strValue) { return Regex.IsMatch(strValue, @"^((\d{2}(([02468][048])|([13579][26]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|([1-2][0-9])))))|(\d{2}(([02468][1235679])|([13579][01345789]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))"); }
/// <summary>
/// 判断输入的字符是否为日期,如2004-07-12 14:25|||1900-01-01 00:00|||9999-12-31 23:59
/// </summary>
/// <param name="strValue"></param>
/// <returns></returns>
public static bool IsDateHourMinute(string strValue) { return Regex.IsMatch(strValue, @"^(19[0-9]{2}|[2-9][0-9]{3})-((0(1|3|5|7|8)|10|12)-(0[1-9]|1[0-9]|2[0-9]|3[0-1])|(0(4|6|9)|11)-(0[1-9]|1[0-9]|2[0-9]|30)|(02)-(0[1-9]|1[0-9]|2[0-9]))\x20(0[0-9]|1[0-9]|2[0-3])(:[0-5][0-9]){1}$"); }
#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="sqlInput">输入字符串</param>
/// <param name="maxLength">最大长度</param>
/// <returns></returns>
public static string CheckMathLength(string inputData, int maxLength) { if (inputData != null && inputData != string.Empty) { 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">string</param>
/// <returns>string</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">string</param>
/// <returns>string</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
}}
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