title: Parsing out a hidden field inside iframe using HtmlAgilityPack .NET
body: <p>I'm having problems picking out data I need that's inside an iframe form. Is it even possible using HtmlAgilityPack? Here's a screenshot using Firebug so it's easier for you guys to see.</p>
  
  <p><a href="http://i.stack.imgur.com/ftt84.jpg" rel="nofollow">http://i.stack.imgur.com/ftt84.jpg</a></p>
  
  <p>I need to parse out the post_form_id. I've tried   </p>
  
  <pre><code>var value = doc.DocumentNode.SelectSingleNode("//input[@type='hidden' and @name='post_form_id']")
          .Attributes["value"].Value;
  </code></pre>
  
  <p>but obviously won't work because it's inside the iframe form. Appreciate any help.</p>