title: Regex match xml attribute value
body: <p>I want to get the integer value of this xml attribute <code>limit=\"25\"</code></p>
  
  <p>I tried this :<code>Match match = Regex.Match(response.Content, "(?&lt;=limit=))\\d+");</code>
  gives me an error : "too many )'s.</p>
  
  <p>and this : <code>Match match = Regex.Match(response.Content, @"limit=([0-9])$"</code>
  this returns nothing, the match is not successful</p>
  
  <p>From this xml:</p>
  
  <pre><code>&lt;issues type="array" limit="25" total_count="251" offset="0"&gt;
  &lt;issue&gt;
  &lt;id&gt;4317&lt;/id&gt;
  </code></pre>