C# 对常用正则表达式封装

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

namespace DelConsole
{
    class Tools
    {
        public enum Type
        {
            整数=0,
            正整数,
            负整数,
            数字,
            电话,
            正数,
            负数,
            浮点数,
            正浮点数,
            负浮点数,
            浮点数2,
            非负浮点数,
            非正浮点数,
            邮件,
            颜色,
            url,
            中文,
            ACSII字符,
            邮编,
            手机,
            IP地址,
            非空,
            图片,
            压缩文件,
            日期,
            QQ号码,         
            用户名=27,
            字母,
            大写字母,
            小写字母,
            身份证
        }

        static string pattern;

        public static bool Check(string str, Type t)
        {
            switch (Convert.ToInt32(t))
            {
                case 0://整数
                    pattern = @"^-?[1-9]/d*$";
                    break;
                case 1://正整数
                    pattern = "^[0-9]*[1-9][0-9]*$";
                    break;
                case 2://负整数
                    pattern = "^-[0-9]*[1-9][0-9]*$";
                    break;
                case 3://数字
                    pattern = "^([+-]?)//d*//.?//d+$";
                    break;
                case 4://电话
                    //在做项目时常常用到判断电话号码的正则表达式，写了一个，可验证如下27种格式：
                    //110
                    //8888888
                    //88888888
                    //8888888-123
                    //88888888-23435
                    //0871-8888888-123
                    //023-88888888-23435
                    //86-0871-8888888-123
                    //8888888_123
                    //88888888_23435
                    //0871_8888888_123
                    //023_88888888_23435
                    //86_0871_8888888_123
                    //8888888－123
                    //88888888－23435
                    //0871－8888888－123
                    //023－88888888－23435
                    //86－0871－8888888－123
                    //8888888—123
                    //88888888—23435
                    //0871—8888888—123
                    //023—88888888—23435
                    //86—0871—8888888—123
                    //13588888888
                    //15988888888
                    //013588888888
                    //015988888888
                    //(0315)7663551
                    pattern = @"((^(/d{2,4}[-_－—]?)?/d{3,8}([-_－—]?/d{3,8})?([-_－—]?/d{1,7})?$)|(^0?1[35]/d{9}$)z)|(^(/([0-9]+/))?[0-9]{7,8}$)";
                    break;
                case 5://正数（正整数+ 0）
                    pattern = @"^/d+$";
                    break;
                case 6://负数（负整数+ 0）
                    pattern = @"^((-/d+)|(0+))$";
                    break;
                case 7://浮点数
                    pattern =@"^(-?/d+)(/./d+)?$";
                    break;
                case 8://正浮点数
                    pattern =@"^(([0-9]+/.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*/.[0-9]+)|([0-9]*[1-9][0-9]*))$";
                    break;
                case 9://负浮点数
                    pattern = @"^(-(([0-9]+/.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*/.[0-9]+)|([0-9]*[1-9][0-9]*)))$";
                    break;
                case 10://浮点数
                    pattern = "^-?([1-9]//d*.//d*|0.//d*[1-9]//d*|0?.0+|0)$";
                    break;
                case 11://非负浮点数（正浮点数+ 0）
                    pattern = @"^/d+(/./d+)?$";
                    break;
                case 12://非正浮点数（负浮点数+ 0）
                    pattern = @"^((-/d+(/./d+)?)|(0+(/.0+)?))$";
                    break;
                case 13://邮件                   //正确
                    pattern = @"^[/w-]+(/.[/w-]+)*@[/w-]+(/.[/w-]+)+$";
                    break;
                case 14://颜色
                    pattern = "^[a-fA-F0-9]{6}$";
                    break;
                case 15://url(http格式的)
                    pattern = @"http://([/w-]+/.)+[/w-]+(/[/w- ./?%&=]*)?";
                    break;
                case 16://仅中文
                    pattern = @"[/u4e00-/u9fa5]";
                    break;
                case 17://仅ACSII字符
                    pattern = "^[//x00-//xFF]+$";
                    break;
                case 18://邮编
                    pattern = "^//d{6}$";
                    break;
                case 19://手机(13号段和号段)
                    pattern = "^13[0-9]{9}$";
                    break;
                case 20://ip地址
                    pattern = @"^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])/.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)/.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)/.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])$";
                    break;
                case 21://非空
                    pattern = "^//S+$";
                    break;
                case 22://图片
                    pattern = @"(.*)/.(jpg|gif|png|bmp)$";
                    break;
                case 23://压缩文件
                    pattern = "(.*)//.(rar|zip|7zip|tgz)$";
                    break;
                case 24://日期
                    //这个日期正则表达式支持
                    //YYYY-MM-DD
                    //YYYY/MM/DD
                    //YYYY_MM_DD
                    //YYYY.MM.DD的形式
                    pattern = @"((^((1[8-9]/d{2})|([2-9]/d{3}))([-///._])(10|12|0?[13578])([-///._])(3[01]|[12][0-9]|0?[1-9])$)|(^((1[8-9]/d{2})|([2-9]/d{3}))([-///._])(11|0?[469])([-///._])(30|[12][0-9]|0?[1-9])$)|(^((1[8-9]/d{2})|([2-9]/d{3}))([-///._])(0?2)([-///._])(2[0-8]|1[0-9]|0?[1-9])$)|(^([2468][048]00)([-///._])(0?2)([-///._])(29)$)|(^([3579][26]00)([-///._])(0?2)([-///._])(29)$)|(^([1][89][0][48])([-///._])(0?2)([-///._])(29)$)|(^([2-9][0-9][0][48])([-///._])(0?2)([-///._])(29)$)|(^([1][89][2468][048])([-///._])(0?2)([-///._])(29)$)|(^([2-9][0-9][2468][048])([-///._])(0?2)([-///._])(29)$)|(^([1][89][13579][26])([-///._])(0?2)([-///._])(29)$)|(^([2-9][0-9][13579][26])([-///._])(0?2)([-///._])(29)$))";
                    break;
                case 25://QQ号码
                    pattern = "[1-9][0-9]{4,}";
                    break;

                case 27://用来用户注册。匹配由数字、个英文字母或者下划线组成的字符串
                    pattern = "^(?!//d)[a-zA-Z0-9_//u4e00-//u9fa5]+$";
                    break;
                case 28://字母
                    pattern = "^[A-Za-z]+$";
                    break;
                case 29://大写字母
                    pattern = "^[A-Z]+$";
                    break;
                case 30://小写字母
                    pattern = "^[a-z]+$";
                    break;
                case 31://身份证
                    pattern = @"^[1-9]([0-9]{16}|[0-9]{13})[xX0-9]$";
                    break;
                default:
                    pattern = string.Empty;
                    break;


            }
            return Regex.IsMatch(str,pattern);
        }

    }
}