几个有用的正则表达式模版 Regular Expression Patterns( From C# cookbook)

• Match only alphanumeric characters along with the characters -,+.., and any whitespace:　^([/w/.+-]|/s)*$

　　　仅包括英文字母（大小写）、数字、"."、"+"、"-"及空格的任意长度的字串

• Match only alphanumeric characters along with the characters -, +. . and any whitespace, with the stipulation that there is at least one of these characters and no more than 10 of these characters:  ^([/w/.+-]|/s)*{1,10}$

          (同上),但长度为1-10个字符长．

• Match a person's name, up to 55 characters: 　　^[a-zA-Z/'/-/s]{1,55}$

          可以为任意英文字及" ' "、"-"、数字的用户名，长度为1-55个字符长．

• Match a positive or negative integer:　　^((/+|-)/d)?*$

          可用来表示任意一个正负整数．

• Match a date in the form ##/##/#### where the day and month can be a one- or two digit value and year can either be a two- or four- digit value:　^/d{1,2}///d{1,2}///d{2,4}$

　　　日期表达式，其中月日可为一至两位，年份可为两至四位数字. (这个不正确，仅作参考)

• Match a time to be entered with an optional am or pm extension (note that this regular expression also handles military time):　^/d{1,2}:/d{1,2}/s?{[a|p]m}?$

　　　带am,pm的时间表达式．(这个不正确，仅作参考)

• Verify if the input is a social security number of the form ###-##-####:  ^/d{3}-/d{2}-/d{4}$

　　　 校验一串特定格式的编码．

 

　　　 附加一个自已写的，格式为固定以零开始，九位数字分三组，中间可以有"-"　　^0/d{2}-?/d{3}-?/d{3}

• Match an IPv4 address:　^([0-2]?[0-5]?[0-5]/.){3}[0-2]?[0-5]?[0-5]$

　　　匹配一个IPv4规则形式的网址．

• Verify that an email address is in the form name@address where address is not IP address:　/w+([-+.']/w+)*@/w+([-.]/w+)*/./w+([-.]/w+)*

         校验一个邮件地址，其地址为字符形式．（这个不是书上的，比书上的要好）

• Match or verity a URL that uses either the HTTP, HTTPS, or FTP protocol. Note that this regular expression will not match relative URLs：　  ^(http|https|ftp)/://[a-zA-Z0-9/-/.]+/.[a-zA-Z]{2,3}(:[z-aA-Z0-9]*)?/?[a-zA-Z0-9]/-/._/?,/'////+&%/$#/=~])*$

          校验一个URL地址，但这个表达式不能表示相对地址

• Match only a dollar amount with the optional $and + or - preceding characters(note that any number of decimal places may be added):　　^/$?[+-]?[/d,]*(/./d*)?$

　　　任意价格表示法(含任意小数位及＄符)

 

          This is similar to the previous regular expression except that no more than two decimal places are allowed: ^/$?[+-]? [/d,]*/.?/d{0,2}$

 

          （同上），但最多表示小数点后两位．

• Match a credit card number to be entered as four sets of four digits separated with a space, - or no character at all:　　^((/d{4}[- ]?){3}/d{4})$

　　　匹配一个信用卡号，四位一组，中间可以没有，也可能有空格及连字符

• Match a zip code to be entered as five digits with an optional four-digit extension: ^/d{5}(-/d{4})?$

          匹配邮编形式为５位数字或以连字符与另外４位数字相连．　（这个好象不正确，仅供参考）

• Match a North American phone number with an optional area code and an optional-character to be usecd in the phone number and no extension:　　^(/(?[0-9]{3}/)?)?/-?)[0-9]{3}/-?[0-9]{4}$

　　　　匹配北美电话号码，区号为可选项．

• Match a phone number similar to the previous regular expression but allow an optional five-digit extension prefixed with either ext or extension:　　　^(/(?[0-9]{3}/)?)?/-?)[0-9]{3}/-?[0-9]{4}(/s*ext(ension)?)[0-9]{5})?$

           (同上), 可附加５位数字的分机号码．