title: HTMLAgilityPack: Selectnodes with XPath
body: <p>I'm trying to get all the nodes in a webpage.
  I've re-checked the XPATH string a lot of times but still no result:
  I have tried using the following code:</p>
  
  <pre><code>    string publicatiom = "WO2007000010";
      string Check_URL = @"http://patentscope.wipo.int/search/en/detail.jsf?docId=" publication + "&amp;tab=PCTDocuments";
      var baseUrl = new Uri(Check_URL);
      HtmlWeb hw = new HtmlWeb();
      HtmlAgilityPack.HtmlDocument doc = hw.Load(baseUrl.ToString());
      string checkstring = "*//[@id='detailMainForm:j_idt1375:0:j_idt1394']";
      HtmlNodeCollection Nodes = doc.DocumentNode.SelectNodes(checkstring);
  </code></pre>
  
  <p>However, it returns a runtime error.</p>