C# CSS Classname Regex

As promised, although a little late I have updated the Regex to get CSS classnames via C#. The problem I had was that it would find file extensions in a url specified by the "url(xyz.png)" in an attribute.

I added a little negative look behind and now it seems to work prety well:

string css = @".someclass{background: white url(someimage.png) repeat-x top left;}.someclass2{background: white url ( someimage.png) repeat-x top left;}";MatchCollection arr = Regex.Matches(css, @"(?<!url\s*(.*)(.[-]?[_a-zA-Z][_a-zA-Z0-9-]*|[^\0-\177]*\[0-9a-f]{1,6}(\r\n[ \n\r\t\f])?|\[^\n\r\f0-9a-f]*)");string class1 = arr[0].Value;string class2 = arr[1].Value;

About Me: Paul Kinlan

I lead the Chrome Developer Relations team at Google.

We want people to have the best experience possible on the web without having to install a native app or produce content in a walled garden.

Our team tries to make it easier for developers to build on the web by supporting every Chrome release, creating great content to support developers on web.dev, contributing to MDN, helping to improve browser compatibility, and some of the best developer tools like Lighthouse, Workbox, Squoosh to name just a few.