C# 判断各种输入(转)

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using Sky.Framework.Text.RegularExpressions;

namespace Components
{
    public class ValidatorHelper
    {
        /// <summary>
        /// 判断字符串是否与指定正则表达式匹配
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <param name="regularExp">正则表达式</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsMatch(string input, string regularExp)
        {
            return Regex.IsMatch(input, regularExp);
        }

        /// <summary>
        /// 验证非负整数（正整数 + 0）
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsUnMinusInt(string input)
        {
            return Regex.IsMatch(input, RegularExp.UnMinusInteger);
        }

        /// <summary>
        /// 验证正整数
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsPlusInt(string input)
        {
            return Regex.IsMatch(input, RegularExp.PlusInteger);
        }

        /// <summary>
        /// 验证非正整数（负整数 + 0） 
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsUnPlusInt(string input)
        {
            return Regex.IsMatch(input, RegularExp.UnPlusInteger);
        }

        /// <summary>
        /// 验证负整数
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsMinusInt(string input)
        {
            return Regex.IsMatch(input, RegularExp.MinusInteger);
        }

        /// <summary>
        /// 验证整数
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsInt(string input)
        {
            return Regex.IsMatch(input, RegularExp.Integer);
        }

        /// <summary>
        /// 验证非负浮点数（正浮点数 + 0）
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsUnMinusFloat(string input)
        {
            return Regex.IsMatch(input, RegularExp.UnMinusFloat);
        }

        /// <summary>
        /// 验证正浮点数
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsPlusFloat(string input)
        {
            return Regex.IsMatch(input, RegularExp.PlusFloat);
        }

        /// <summary>
        /// 验证非正浮点数（负浮点数 + 0）
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsUnPlusFloat(string input)
        {
            return Regex.IsMatch(input, RegularExp.UnPlusFloat);
        }

        /// <summary>
        /// 验证负浮点数
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsMinusFloat(string input)
        {
            return Regex.IsMatch(input, RegularExp.MinusFloat);
        }

        /// <summary>
        /// 验证浮点数
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsFloat(string input)
        {
            return Regex.IsMatch(input, RegularExp.Float);
        }

        /// <summary>
        /// 验证由26个英文字母组成的字符串
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsLetter(string input)
        {
            return Regex.IsMatch(input, RegularExp.Letter);
        }

        /// <summary>
        /// 验证由中文组成的字符串
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsChinese(string input)
        {
            return Regex.IsMatch(input, RegularExp.Chinese);
        }

        /// <summary>
        /// 验证由26个英文字母的大写组成的字符串
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsUpperLetter(string input)
        {
            return Regex.IsMatch(input, RegularExp.UpperLetter);
        }

        /// <summary>
        /// 验证由26个英文字母的小写组成的字符串
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsLowerLetter(string input)
        {
            return Regex.IsMatch(input, RegularExp.LowerLetter);
        }

        /// <summary>
        /// 验证由数字和26个英文字母组成的字符串
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsNumericOrLetter(string input)
        {
            return Regex.IsMatch(input, RegularExp.NumericOrLetter);
        }

        /// <summary>
        /// 验证由数字组成的字符串
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsNumeric(string input)
        {
            return Regex.IsMatch(input, RegularExp.Numeric);
        }
        /// <summary>
        /// 验证由数字和26个英文字母或中文组成的字符串
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsNumericOrLetterOrChinese(string input)
        {
            return Regex.IsMatch(input, RegularExp.NumbericOrLetterOrChinese);
        }

        /// <summary>
        /// 验证由数字、26个英文字母或者下划线组成的字符串
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsNumericOrLetterOrUnderline(string input)
        {
            return Regex.IsMatch(input, RegularExp.NumericOrLetterOrUnderline);
        }

        /// <summary>
        /// 验证email地址
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsEmail(string input)
        {
            return Regex.IsMatch(input, RegularExp.Email);
        }

        /// <summary>
        /// 验证URL
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsUrl(string input)
        {
            return Regex.IsMatch(input, RegularExp.Url);
        }

        /// <summary>
        /// 验证电话号码
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsTelephone(string input)
        {
            return Regex.IsMatch(input, RegularExp.Telephone);
        }

        /// <summary>
        /// 验证手机号码
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsMobile(string input)
        {
            return Regex.IsMatch(input, RegularExp.Mobile);
        }

        /// <summary>
        /// 通过文件扩展名验证图像格式
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsImageFormat(string input)
        {
            return Regex.IsMatch(input, RegularExp.ImageFormat);
        }

        /// <summary>
        /// 验证IP
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsIP(string input)
        {
            return Regex.IsMatch(input, RegularExp.IP);
        }

        /// <summary>
        /// 验证日期（YYYY-MM-DD）
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsDate(string input)
        {
            return Regex.IsMatch(input, RegularExp.Date);
        }

        /// <summary>
        /// 验证日期和时间（YYYY-MM-DD HH:MM:SS）
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回true</returns>
        public static bool IsDateTime(string input)
        {
            return Regex.IsMatch(input, RegularExp.DateTime);
        }

        /// <summary>
        /// 验证颜色（#ff0000）
        /// </summary>
        /// <param name="input">要验证的字符串</param>
        /// <returns>验证通过返回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- ./?%&=]*)?$";
}