【发布时间】：2012-09-19 15:01:34
【问题描述】：
我尝试在互联网上搜索一个正则表达式来检查：
- 积极的#
- 0 到 12 之间
我需要把它放在这行代码的括号中
Regex rxValidHeightInches = new Regex();
任何帮助将不胜感激！
谢谢
【问题讨论】：
标签： c# regex validation
【发布时间】：2012-09-19 15:01:34
【问题描述】：
这应该可以^(\d|(1[0-2]))$
var rxValidHeightInches = new Regex("^(\\d|(1[0-2]))$");
【讨论】：
-
假设你的意思是在“包容性”之间
试试这个。
(?<!-)(\b((1[01])|[1-9])\b)
它匹配 1 - 9 或 10 或 11。总是排除负数。
说明
-Assert that it is impossible to match the regex below with the match ending at this position (negative lookbehind) «(?<!-)»
---Match the character “-” literally «-»
-Match the regular expression below and capture its match into backreference number 1 «(\b((1[01])|[1-9])\b)»
---Assert position at a word boundary «\b»
---Match the regular expression below and capture its match into backreference number 2 «((1[01])|[1-9])»
------Match either the regular expression below (attempting the next alternative only if this one fails) «(1[01])»
---------Match the regular expression below and capture its match into backreference number 3 «(1[01])»
------------Match the character “1” literally «1»
------------Match a single character present in the list “01” «[01]»
------Or match regular expression number 2 below (the entire group fails if this one fails to match) «[1-9]»
---------Match a single character in the range between “1” and “9” «[1-9]»
---Assert position at a word boundary «\b»
屏幕截图
这一项包括 0 - 12
(?<!-)(\b((1[0-2])|[0-9])\b)
【讨论】：