title: C# Regex quick help
body: <p>I'm trying to read a text file, and then break it up by each line thats is split by a "\n".  Then Regex it  and write out the regex.</p>
  
  <pre><code>string contents = File.ReadAllText(filename);
          string[] firefox = filename.Split("\r\n");
          string prefix = prefix = Regex.Match(firefox, @"(\d)").Groups[0].Value;
          File.AppendAllText(workingdirform2 + "configuration.txt", prefix);
  </code></pre>
  
  <p>string[] firefox = filename.Split("\r\n"); doesnt exactly work.  </p>
  
  <p>What I want to do is run a regex foreach line of contents and then write out each line after the regex</p>
  
  <p>So...</p>
  
  <p>filename:<br>
  Hero123<br>
  Hero243<br>
  Hero5959  </p>
  
  <p>writes out to:<br>
  13<br>
  243<br>
  5959  </p>
  
  <p>Well everybody is suggesting something off the base in which i started.  the ending result will be about a 20 line regex with Ints.  I've got to parse it out line by line.</p>