摘要:C# 使用正則運算式判斷各種輸入值
常常用到卻也常常忘記，例如我要如何驗證他是整數，或是只能輸入英文數字，以下提供好用的語法，下列是做成CLASS的方式，當然你也可以直接CALL最後面的正規表示式放在ASP.NET的驗證控制項規則：
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using Sky.Framework.Text.RegularExpressions;
namespace Sky.Components
{
public class ValidatorHelper
{
/// <summary>
/// 判斷字串是否與指定正則運算式匹配
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <param name="regularExp">正則運算式</param>
/// <returns>驗證通過返回true</returns>
public static bool IsMatch(string input, string regularExp)
{
return Regex.IsMatch(input, regularExp);
}
/// <summary>
/// 驗證非負整數（正整數 + 0）
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsUnMinusInt(string input)
{
return Regex.IsMatch(input, RegularExp.UnMinusInteger);
}
/// <summary>
/// 驗證正整數
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsPlusInt(string input)
{
return Regex.IsMatch(input, RegularExp.PlusInteger);
}
/// <summary>
/// 驗證非正整數（負整數 + 0）
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsUnPlusInt(string input)
{
return Regex.IsMatch(input, RegularExp.UnPlusInteger);
}
/// <summary>
/// 驗證負整數
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsMinusInt(string input)
{
return Regex.IsMatch(input, RegularExp.MinusInteger);
}
/// <summary>
/// 驗證整數
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsInt(string input)
{
return Regex.IsMatch(input, RegularExp.Integer);
}
/// <summary>
/// 驗證非負浮點數（正浮點數 + 0）
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsUnMinusFloat(string input)
{
return Regex.IsMatch(input, RegularExp.UnMinusFloat);
}
/// <summary>
/// 驗證正浮點數
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsPlusFloat(string input)
{
return Regex.IsMatch(input, RegularExp.PlusFloat);
}
/// <summary>
/// 驗證非正浮點數（負浮點數 + 0）
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsUnPlusFloat(string input)
{
return Regex.IsMatch(input, RegularExp.UnPlusFloat);
}
/// <summary>
/// 驗證負浮點數
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsMinusFloat(string input)
{
return Regex.IsMatch(input, RegularExp.MinusFloat);
}
/// <summary>
/// 驗證浮點數
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsFloat(string input)
{
return Regex.IsMatch(input, RegularExp.Float);
}
/// <summary>
/// 驗證由26個英文字母組成的字串
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsLetter(string input)
{
return Regex.IsMatch(input, RegularExp.Letter);
}
/// <summary>
/// 驗證由中文組成的字串
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsChinese(string input)
{
return Regex.IsMatch(input, RegularExp.Chinese);
}
/// <summary>
/// 驗證由26個英文字母的大寫組成的字串
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsUpperLetter(string input)
{
return Regex.IsMatch(input, RegularExp.UpperLetter);
}
/// <summary>
/// 驗證由26個英文字母的小寫組成的字串
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsLowerLetter(string input)
{
return Regex.IsMatch(input, RegularExp.LowerLetter);
}
/// <summary>
/// 驗證由數位和26個英文字母組成的字串
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsNumericOrLetter(string input)
{
return Regex.IsMatch(input, RegularExp.NumericOrLetter);
}
/// <summary>
/// 驗證由數位組成的字串
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsNumeric(string input)
{
return Regex.IsMatch(input, RegularExp.Numeric);
}
/// <summary>
/// 驗證由數位和26個英文字母或中文組成的字串
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsNumericOrLetterOrChinese(string input)
{
return Regex.IsMatch(input, RegularExp.NumbericOrLetterOrChinese);
}
/// <summary>
/// 驗證由數位、26個英文字母或者下劃線組成的字串
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsNumericOrLetterOrUnderline(string input)
{
return Regex.IsMatch(input, RegularExp.NumericOrLetterOrUnderline);
}
/// <summary>
/// 驗證email地址
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsEmail(string input)
{
return Regex.IsMatch(input, RegularExp.Email);
}
/// <summary>
/// 驗證URL
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsUrl(string input)
{
return Regex.IsMatch(input, RegularExp.Url);
}
/// <summary>
/// 驗證電話號碼
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsTelephone(string input)
{
return Regex.IsMatch(input, RegularExp.Telephone);
}
/// <summary>
/// 驗證手機號碼
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsMobile(string input)
{
return Regex.IsMatch(input, RegularExp.Mobile);
}
/// <summary>
/// 通過檔副檔名驗證圖像格式
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsImageFormat(string input)
{
return Regex.IsMatch(input, RegularExp.ImageFormat);
}
/// <summary>
/// 驗證IP
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsIP(string input)
{
return Regex.IsMatch(input, RegularExp.IP);
}
/// <summary>
/// 驗證日期（YYYY-MM-DD）
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsDate(string input)
{
return Regex.IsMatch(input, RegularExp.Date);
}
/// <summary>
/// 驗證日期和時間（YYYY-MM-DD HH:MM:SS）
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsDateTime(string input)
{
return Regex.IsMatch(input, RegularExp.DateTime);
}
/// <summary>
/// 驗證顏色（#ff0000）
/// </summary>
/// <param name="input">要驗證的字串</param>
/// <returns>驗證通過返回true</returns>
public static bool IsColor(string input)
{
return Regex.IsMatch(input, RegularExp.Color);
}
}
}
public struct RegularExp
{
public const string Chinese = @"^[\u4E00-\u9FA5\uF900-\uFA2D]+$";
public const string Color = "^#[a-fA-F0-9]{6}";
public const string Date = @"^((((1[6-9]|[2-9]\d)\d{2})-(0?[13578]|1[02])-(0?[1-9]|[12]\d|3[01]))|(((1[6-9]|[2-9]\d)\d{2})-(0?[13456789]|1[012])-(0?[1-9]|[12]\d|30))|(((1[6-9]|[2-9]\d)\d{2})-0?2-(0?[1-9]|1\d|2[0-8]))|(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))-0?2-29-))$";
public const string DateTime = @"^((((1[6-9]|[2-9]\d)\d{2})-(0?[13578]|1[02])-(0?[1-9]|[12]\d|3[01]))|(((1[6-9]|[2-9]\d)\d{2})-(0?[13456789]|1[012])-(0?[1-9]|[12]\d|30))|(((1[6-9]|[2-9]\d)\d{2})-0?2-(0?[1-9]|1\d|2[0-8]))|(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))-0?2-29-)) (20|21|22|23|[0-1]?\d):[0-5]?\d:[0-5]?\d$";
public const string Email = @"^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$";
public const string Float = @"^(-?\d+)(\.\d+)?$";
public const string ImageFormat = @"\.(?i:jpg|bmp|gif|ico|pcx|jpeg|tif|png|raw|tga)$";
public const string Integer = @"^-?\d+$";
public const string IP = @"^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$";
public const string Letter = "^[A-Za-z]+$";
public const string LowerLetter = "^[a-z]+$";
public const string MinusFloat = @"^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$";
public const string MinusInteger = "^-[0-9]*[1-9][0-9]*$";
public const string Mobile = "^0{0,1}13[0-9]{9}$";
public const string NumbericOrLetterOrChinese = @"^[A-Za-z0-9\u4E00-\u9FA5\uF900-\uFA2D]+$";
public const string Numeric = "^[0-9]+$";
public const string NumericOrLetter = "^[A-Za-z0-9]+$";
public const string NumericOrLetterOrUnderline = @"^\w+$";
public const string PlusFloat = @"^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$";
public const string PlusInteger = "^[0-9]*[1-9][0-9]*$";
public const string Telephone = @"(\d+-)?(\d{4}-?\d{7}|\d{3}-?\d{8}|^\d{7,8})(-\d+)?";
public const string UnMinusFloat = @"^\d+(\.\d+)?$";
public const string UnMinusInteger = @"\d+$";
public const string UnPlusFloat = @"^((-\d+(\.\d+)?)|(0+(\.0+)?))$";
public const string UnPlusInteger = @"^((-\d+)|(0+))$";
public const string UpperLetter = "^[A-Z]+$";
public const string Url = @"^http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?$";
}
