title: Retrieve parameters from URL using HtmlAgilityPack
body: <p>I wanna retrieve the parameters from certain URL, how could I do this with htmlagilitypack? </p>
  
  <p>Example URL: <a href="https://stackoverflow.com/questions?page=4&amp;sort=newest">https://stackoverflow.com/questions?page=4&amp;sort=newest</a></p>
  
  <p>I want to get the page number and the sort value...Is it possible to do that??</p>
  
  <p>The codes for load HTML page:</p>
  
  <pre><code>public HtmlDocument ExtractHtml(string url)
  {
      HtmlDocument doc = new HtmlWeb().Load(url);
      return doc; 
  }
  </code></pre>