[RESOLVED] C# regex to find html tag

[dannystommen]

Hi all,

I'm trying to analyze the data off some html files.

I want to retrieve the <meta name="keywords" content="keyword1, another_keyword" /> tag from the html. Using Regex I'm able to this via

MatchCollection keywords = Regex.Matches(html, "<meta name=\"keywords\" content=\".*\" />");

This works. Probably not the best regular expression written in history but it works. But now I noticed that on some pages the attributes in the tag have a different order, thus it changes to <meta content="keyword1, another_keyword" name="keywords" />. Now my Regex doesn't work anymore.
I could solve it as following

MatchCollection keywords = Regex.Matches(html, "<meta name=\"keywords\" content=\".*\" />");
if (keywords.Count == 0)
  keywords = Regex.Matches(html, "<meta content=\".*\" name=\"keywords\" />");

But my guess is that there should be a way to this in one statement.

[someuser77]

Looking at the HTML Meta Tag Parser I think you should use a two step solution where you first select your meta tags and then select the content with something like:

string regex = @"(?<name>content)s*=\s*(\""(?<value>[^\""]*)\""|'(?<value>[^']*)'|(?<value>[^\""'<> ]+)\s*)+";

[dannystommen]

The HTML Meta Tag Parser is really good.

Thanks a lot!