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How could I match a text between a span opening and closing tags with style attribute?:

<span style="white-space: pre-line">some text</span>

I tried the following pattern but it doesn't work:

<span style=\"white-space: pre-line\">(.*)</span>
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    Are you asking us for a regex? If so then lookup the look behind and lookahead assertations Commented Jun 8, 2016 at 7:34
  • Actually I understand that it's a bad idea to search html with a regex. Now I'm looking how to convert html text to a plain one. Commented Jun 8, 2016 at 9:18
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    I would suggest suing the nuget package: HTML Agility Pack nuget.org/packages/HtmlAgilityPack. It makes HTML traversal very easy Commented Jun 8, 2016 at 9:20
  • Thanks for suggesting. Commented Jun 8, 2016 at 12:18

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First of all, it is in general a bad idea to parse HTML with a Regex.

It would be better to use a solution to parse HTML, like HTML Agility Pack.

That said, if you need help with Regular Expressions, you can download a tool that will help you analyze and test them. There are several tools available for that, I personally like Expresso.

In this particular case, I think you are having problems with the spaces, but I cannot be sure since you are not showing the RegexOptions you are using to build your Regex. Try 

<span\s*style=\"white-space:\s*pre-line\">(.*)</span>
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2 Comments

@MaximilianAst: why should it be necessary to escape the /?
Sry my bad. Forgot that / hasn't to be escaped in .NET

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