常用正则表达式类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
namespace Linus.Fin.Public.StringLib
{
public class RegularExp
{
#region 常用正则表达式枚举类
public class RegExpPattern
{
/// <summary>
/// 非负整数（正整数 + 0）
/// </summary>
public const string NonNegativeNumber = @"^/d+$";
/// <summary>
/// 非正整数（负整数 + 0）
/// </summary>
public const string NonPositiveNumber = @"^((-/d+)|(0+))$";
/// <summary>
/// 正整数
/// </summary>
public const string PositiveNumber = @"^[0-9]*[1-9][0-9]*$";
/// <summary>
/// 负整数
/// </summary>
public const string NegativeNumber = @"^-[0-9]*[1-9][0-9]*$";
/// <summary>
/// 整数
/// </summary>
public const string Number = @"^-?/d+$";
/// <summary>
/// 非负浮点数（正浮点数 + 0）
/// </summary>
public const string NonNegativeFloat = @"^/d+(/./d+)?$";
/// <summary>
/// 正浮点数
/// </summary>
public const string PositiveFloat = @"^(([0-9]+/.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*/.[0-9]+)|([0-9]*[1-9][0-9]*))$";
/// <summary>
/// 非正浮点数（负浮点数 + 0）
/// </summary>
public const string NonPositiveFloat = @"^((-/d+(/./d+)?)|(0+(/.0+)?))$";
/// <summary>
/// 负浮点数
/// </summary>
public const string NegativeFloat = @"^(-(([0-9]+/.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*/.[0-9]+)|([0-9]*[1-9][0-9]*)))$";
/// <summary>
/// 浮点数
/// </summary>
public const string Float = @"^(-?/d+)(/./d+)?$";
/// <summary>
/// 由26个英文字母组成的字符串
/// </summary>
public const string LetterString = @"^[A-Za-z]+$";
/// <summary>
/// 由26个英文字母的大写组成的字符串
/// </summary>
public const string UpperLetterString = @"^[A-Z]+$";
/// <summary>
/// 由26个英文字母的小写组成的字符串
/// </summary>
public const string LowerLetterString = @"^[a-z]+$";
/// <summary>
/// 由数字和26个英文字母组成的字符串
/// </summary>
public const string DigitLetterString = @"^[A-Za-z0-9]+$";
/// <summary>
/// 由数字、26个英文字母或者下划线组成的字符串
/// </summary>
public const string GeneralString = @"^/w+$";
/// <summary>
/// 电话号码
/// </summary>
public const string TelephoneNumber = @"(d+-)?(d{4}-?d{7}|d{3}-?d{8}|^d{7,8})(-d+)?";
/// <summary>
/// IP地址
/// </summary>
public const string IPAddr = @"^(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5])$";
/// <summary>
/// 匹配中文字符的正则表达式
/// </summary>
public const string ChineseString = @"[/u4e00-/u9fa5]";
/// <summary>
/// 匹配双字节字符(包括汉字在内)
/// </summary>
public const string UnicodeText = @"[^/x00-/xff]";
/// <summary>
/// 匹配空行的正则表达式
/// </summary>
public const string BlankLine = @"/n[/s| ]*/r";
/// <summary>
/// 匹配HTML标记的正则表达式
/// </summary>
public const string HtmlFlag = @"/<(.*)>.*<///1>|<(.*) //>/";
/// <summary>
/// 匹配Email地址的正则表达式
/// </summary>
public const string EmailAddr = @"/w+([-+.]/w+)*@/w+([-.]/w+)*/./w+([-.]/w+)*";
/// <summary>
/// 匹配网址URL的正则表达式
/// </summary>
public const string UrlAddr = @"^[a-zA-z]+://(//w+(-//w+)*)(//.(//w+(-//w+)*))*(//?//S*)?$";
/// <summary>
/// 匹配帐号是否合法(字母开头，允许5-16字节，允许字母数字下划线)
/// </summary>
public const string BankAcct = @"^[a-zA-Z][a-zA-Z0-9_]{4,15}$";
/// <summary>
/// 匹配国内电话号码
/// </summary>
public const string ChinaTelephone = @"(/d{3}-|/d{4}-)?(/d{8}|/d{7})?";
}
#endregion
#region private function
private static bool IsMatched(string strInputText, string strRegPatter, RegexOptions regFlag)
{
Regex ex = new Regex(strRegPatter, regFlag);
return ex.IsMatch(strInputText);
}
#endregion
#region public function
public static bool IsMailAddr(string strInputText)
{
return IsMailAddr(strInputText, true);
}
public static bool IsMailAddr(string strInputText, bool bIgnoreCase)
{
RegexOptions regFlag = RegexOptions.Compiled;
if (bIgnoreCase) regFlag = regFlag | RegexOptions.IgnoreCase;
return IsMatched(strInputText, RegExpPattern.EmailAddr, regFlag);
}
public static bool IsIPAddr(string strInputText)
{
return IsMatched(strInputText, RegExpPattern.IPAddr, RegexOptions.Compiled);
}
public static bool IsNumber(string strInputText)
{
return IsMatched(strInputText, RegExpPattern.Number, RegexOptions.Compiled);
}
public static bool IsNegativeNumber(string strInputText)
{
return IsMatched(strInputText, RegExpPattern.NegativeNumber, RegexOptions.Compiled);
}
public static bool IsPositiveNumber(string strInputText)
{
return IsMatched(strInputText, RegExpPattern.PositiveNumber, RegexOptions.Compiled);
}
public static bool IsNonNegativeNumber(string strInputText)
{
return IsMatched(strInputText, RegExpPattern.NonNegativeNumber, RegexOptions.Compiled);
}
public static bool IsNonPositiveNumber(string strInputText)
{
return IsMatched(strInputText, RegExpPattern.NonPositiveNumber, RegexOptions.Compiled);
}
public static bool IsFloat(string strInputText)
{
return IsMatched(strInputText, RegExpPattern.Float, RegexOptions.Compiled);
}
public static bool IsNegativeFloat(string strInputText)
{
return IsMatched(strInputText, RegExpPattern.NegativeFloat, RegexOptions.Compiled);
}
public static bool IsPositiveFloat(string strInputText)
{
return IsMatched(strInputText, RegExpPattern.PositiveFloat, RegexOptions.Compiled);
}
public static bool IsNonNegativeFloat(string strInputText)
{
return IsMatched(strInputText, RegExpPattern.NonNegativeFloat, RegexOptions.Compiled);
}
public static bool IsNonPositiveFloat(string strInputText)
{
return IsMatched(strInputText, RegExpPattern.NonPositiveFloat, RegexOptions.Compiled);
}
#endregion
}
}

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常用正则表达式类

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