title: How get a custom tag with html agility pack?
body: <p>Need to create a summary/indice </p>
  
  <p>For this I have tags <code>&lt;Document-Title&gt; My Title &lt;/Document-Title&gt;</code></p>
  
  <p>How  I get these tags using HTML agility pack?</p>
  
  <p>I have tried this:</p>
  
  <pre><code> HtmlDocument html = new HtmlDocument();
    html.Load(new StringReader(Document.Content)); //Is the &lt;html&gt; I'm load in database
  
    var titles = html.DocumentNode.SelectNodes("//Document-Title");
  </code></pre>
  
  <p>But titles is null</p>