正则表达式通配符 [英] Regular expression wildcard

问题描述

我刚刚开始使用正则表达式，这是如此巨大，即使阅读文档后，我似乎无法找到从哪里开始帮助我的问题。

I've just started using Regular Expressions and this is so overwhelming that even after reading documentation I can't seem to find where to start to help with my problem.

我要一串字符串。

 "Project1 - Notepad"
 "Project2 - Notepad"
 "Project3 - Notepad"
 "Untitled - Notepad"
 "HeyHo - Notepad"

和我有一个包含一个字符串。外卡

And I have a string containing a wild card.

"* - Notepad"

我需要，如果我比任何这些字符串包含通配符一则返回true。 （使用 Regex.IsMatch（）或类似的东西。）

I would need that if I compare any of these strings with the one containing the wildcard it returns true. (With Regex.IsMatch() or something like that..)

我通常不要求回答这样，但我无法找到我所需要的。可能有人只是点出我的方向是正确的？

I don't usually asks for answers like that but I just can't find what I need. Could someone just point me out in the right direction ?

推荐答案

通配符 * 等同于正则表达式。*（贪婪）或。*？（不贪婪），所以你要执行与string.replace（）第一个

The wildcard * is equivalent to the Regex pattern ".*" (greedy) or ".*?" (not-greedy), so you'll want to perform a string.Replace() first

string pattern = inputPattern.Replace("*", ".*?");
Regex regex = new Regex(pattern);

编辑：

请记住，如果 inputPattern 包含正则表达式中使用的任何特殊字符，你的模式将发生爆炸。

Keep in mind, that if inputPattern contains any special character used by Regex, your pattern would explode.

Regex.IsMatch(input, ".NET"); // may match ".NET", "aNET", "?NET", "*NET" and many more

所以你要留意他们（把 \ 这些，如的前面。 - > \ ）

So you'll want to keep an eye out for them (put a \ in front of those, such as . -> \.)

的MSDN：正则表达式快速参考

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