title: HtmlAgilityPack obtain Title and meta
body: <p>I try to practice "HtmlAgilityPack ", but I am having some issues regarding this. here's what I coded, but I can not get correctly  the title  and the description of a web page ...
  If someone can enlighten me on my mistake :)</p>
  
  <pre><code>...
  public static void Main(string[] args)
      {
          string link = null;
          string str;
          string answer;
  
          int curloc; // holds current location in response 
          string url = "http://stackoverflow.com/";
  
          try
          {
  
              do
              {
                  HttpWebRequest HttpWReq = (HttpWebRequest)WebRequest.Create(url);
                  HttpWReq.UserAgent = @"Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5";
                  HttpWebResponse HttpWResp = (HttpWebResponse)HttpWReq.GetResponse();
                  //url = null; // disallow further use of this URI 
                  Stream istrm = HttpWResp.GetResponseStream();
                  // Wrap the input stream in a StreamReader. 
                  StreamReader rdr = new StreamReader(istrm);
  
                  // Read in the entire page. 
                  str = rdr.ReadToEnd();
  
                  curloc = 0;
                  //WebPage result;
                  do
                  {
                      // Find the next URI to link to. 
                      link = FindLink(str, ref curloc); //return the good link
                      Console.WriteLine("Title found: " + curloc);
                      //title = Title(str, ref curloc);
  
                      if (link != null)
                      {
                          Console.WriteLine("Link found: " + link);
                          using (System.Net.WebClient client = new System.Net.WebClient())
                          {
                              HtmlDocument htmlDoc = new HtmlDocument();
                              var html = client.DownloadString(url);
                              htmlDoc.LoadHtml(link); //chargement de HTMLAgilityPack
                              var htmlElement = htmlDoc.DocumentNode.Element("html");
  
                              HtmlNode node = htmlDoc.DocumentNode.SelectSingleNode("//meta[@name='description']");
                              if (node != null)
                              {
                                  string desc = node.GetAttributeValue("content", "");
                                  Console.Write("DESCRIPTION: " + desc);
                              }
                              else
                              {
                                  Console.WriteLine("No description");
                              }
  
                              var titleElement =
                                                  htmlDoc.DocumentNode
                                                     .Element("html")
                                                     .Element("head")
                                                     .Element("title");
                              if (titleElement != null)
                              {
                                  string title = titleElement.InnerText;
                                  Console.WriteLine("Titre: {0}", title);
                              }
                              else
                              {
                                  Console.WriteLine("no Title");
                              }
                              Console.Write("Done");
                          }
                          Console.Write("Link, More, Quit?");
                          answer = Console.ReadLine();
                      }
                      else
                      {
                          Console.WriteLine("No link found.");
                          break;
                      }
                  } while (link.Length &gt; 0);
  
                  // Close the Response.
                  HttpWResp.Close();
              } while (url != null); 
          }
  catch{ ...}
  </code></pre>
  
  <p>Thanks in advance :)</p>