/// <summary> /// 正则表达式相关方法集合 /// </summary> public static class RegularHelper { private const string m_NumberPattm = @"^[-+]?(0{1}|(([1-9]){1}[0-9]{0,6}))?$"; private const string m_NumberPattmTemplate = @"^[-+]?(0{1}|(([1-9]){1}[0-9]{0,digit}))?$"; private const string m_DecimalPattm = @"^[-+]?(0{1}|(([1-9]){1}[0-9]{0,6}))(.[0-9]{0,2})?$"; private const string m_DecimalPattmTemplate = @"^[-+]?(0{1}|(([1-9]){1}[0-9]{0,intDigit}))(.[0-9]{0,decimalDigit})?$"; private const string m_EmailPattm = @"^w+([-+.]w+)*@w+([-.]w+)*.w+([-.]w+)*$"; private const string m_StringPattm="^\w+$"; private const string m_URLPattm = @"^http(s)?://([w-]+.?)+[w-]+(:d+)?(/[w- ./?%&=]*)?$"; private const string m_GUIDPattm = @"^[A-Fa-f0-9]{8}(-[A-Fa-f0-9]{4}){3}-[A-Fa-f0-9]{12}$"; private static Dictionary<string, Regex> m_RegexList = new Dictionary<string, Regex>(); /// <summary> /// 根据传入的字符串和提供的正则表达式进行验证 /// </summary> /// <param name="input">需要进行验证的字符串</param> /// <param name="pattem">验证时使用的正则表达式</param> /// <param name="options">正则表达式选项</param> /// <returns>匹配通过返回true，否则返回false</returns> public static bool IsMatch(string input, string pattem, RegexOptions options) { Regex reg = null; lock (typeof(RegularHelper)) { if (m_RegexList.ContainsKey(pattem)) { reg = m_RegexList[pattem]; } else { reg = new Regex(pattem, options); m_RegexList.Add(pattem, reg); } } return reg.IsMatch(input); } /// <summary> /// 根据传入的字符串和提供的正则表达式进行验证 /// </summary> /// <param name="input">需要进行验证的字符串</param> /// <param name="pattem">验证时使用的正则表达式</param> /// <returns>匹配通过返回true，否则返回false</returns> public static bool IsMatch(string input, string pattem) { return IsMatch(input, pattem, RegexOptions.IgnoreCase | RegexOptions.Compiled); } /// <summary> /// 检查输入的字符串是否是整数，默认7位数 /// </summary> /// <param name="input">输入的字符串</param> /// <returns>匹配通过返回true，否则返回false</returns> public static bool IsNumber(string input) { bool result=false; result = IsMatch(input, m_NumberPattm); return result; } /// <summary> /// 指定数字长度，进行整数验证 /// <remarks>如果digit为空或者digit小于等于0，将自动默认使用7位数字验证</remarks> /// </summary> /// <param name="input">输入的字符串</param> /// <param name="digit">整数最大位数</param> /// <returns>匹配通过返回true，否则返回false</returns> public static bool IsNumber(string input, int digit) { bool result = false; string pattmTemplate = string.Empty; if ( digit > 0) { pattmTemplate = m_NumberPattmTemplate.Replace("digit",Convert.ToString(digit-1)); } else { pattmTemplate = m_NumberPattm; } result = IsMatch(input, pattmTemplate); return result; } /// <summary> /// 检查输入的字符串是否包含小数格式，默认7位整数，2位小数 /// </summary> /// <param name="input">输入的字符串</param> /// <returns>匹配通过返回true，否则返回false</returns> public static bool IsDecimal(string input) { bool result = false; result = IsMatch(input, m_DecimalPattm); return result; } /// <summary> /// 指定小数位数，对输入字符串进行验证 /// <remarks>此时整数部分，默认使用最大7位，小数根据使用者指定产生。如果指定的小数位数小于等于0，那么将采用默认的2位格式验证</remarks> /// </summary> /// <param name="input">输入的字符串</param> /// <param name="decimalDigit">小数最大位数</param> /// <returns>匹配通过返回true，否则返回false</returns> public static bool IsDecimal(string input,int decimalDigit) { bool result = false; string pattmTemplate = string.Empty; if ( decimalDigit > 0) { pattmTemplate = m_DecimalPattmTemplate.Replace("decimalDigit", decimalDigit.ToString()); pattmTemplate = pattmTemplate.Replace("intDigit", "6"); } else { pattmTemplate = m_DecimalPattm; } result = IsMatch(input, pattmTemplate); return result; } /// <summary> /// 指定整数位数和小数位数,进行数字验证 /// <remarks>如果指定的整数位数小于0，那么将使用默认的7位整数格式 /// 如果指定的小数位数小于0，那么将使用默认的2位小数格式</remarks> /// </summary> /// <param name="input">输入的字符串</param> /// <param name="intDigit">整数位数</param> /// <param name="decimalDigit">小数位数</param> /// <returns>匹配通过返回true，否则返回false</returns> public static bool IsDecimal(string input,int intDigit, int decimalDigit) { bool result = false; string pattmTemplate = string.Empty; if ( intDigit > 0) { pattmTemplate = m_DecimalPattmTemplate.Replace("intDigit", Convert.ToString(intDigit-1)); } else { pattmTemplate = pattmTemplate.Replace("intDigit", "6"); } if ( decimalDigit > 0) { pattmTemplate = pattmTemplate.Replace("decimalDigit", decimalDigit.ToString()); } else { pattmTemplate = pattmTemplate.Replace("decimalDigit", "2"); } result = IsMatch(input, pattmTemplate); return result; } /// <summary> /// 验证输入字符串是否EMail地址 /// </summary> /// <param name="input">输入的字符串</param> /// <returns>匹配通过返回true，否则返回false</returns> public static bool IsEmailAddress(string input) { bool result = false; result = IsMatch(input, m_EmailPattm); return result; } /// <summary> /// 验证输入字符串是否是26个字母+数字+下划线 /// </summary> /// <param name="input"></param> /// <returns></returns> public static bool IsCheck(string input) { bool result = false; result = IsMatch(input, m_StringPattm); return result; } /// <summary> /// 验证输入字符串是否是URL /// </summary> /// <param name="input">输入的字符串</param> /// <returns>匹配通过返回true，否则返回false</returns> public static bool IsURL(string input) { return IsMatch(input, m_URLPattm); } /// <summary> /// 验证输入字符串是否是GUID值 /// </summary> /// <param name="input">输入的字符串</param> /// <returns>匹配通过返回true，否则返回false</returns> public static bool IsGuid(string input) { return IsMatch(input, m_GUIDPattm); } }