title: Access full page source in WatiN
body: <p>I am looking for a way to pass my webpages through a DTD validator as part of my WatiN tests, but I haven't found a clean way to access the raw HTML yet. Is there a built-in way to do it?</p>
  
  <p>I think I could access the property <code>IE.InternetExplorer</code> and <code>QueryInterface</code> for the <code>IPersistStreamInit</code> interface and serialize the document to an <code>IStream</code>, but it seems like a lot of work for what I guess must be a fairly common task.</p>
  
  <p>Am I missing something obvious in WatiN? Or can someone think of a better solution than the one I outlined above? That solution is very IE specific after all.</p>