title: Get Text from web with Html Agility Pack
body: <p>I have the following HTML structure:</p>
  <pre class="lang-html prettyprint-override"><code>&lt;div class=&quot;sub-title&quot;&gt;
                          &lt;span class=&quot;ng-binding&quot;&gt;יתרת עו&quot;ש&lt;/span&gt;
                            
  </code></pre>
  <p>I want to get the string יתרת עו&quot;ש</p>
  <p>I tried:</p>
  <pre><code>var Header = doc.DocumentNode.SelectNodes(&quot;//span[@class=ng-binding]&quot;); 
  Console.WriteLine(Header.ToString());
  </code></pre>
  <p>but I got a <code>NullReferenceException</code>.  What am I doing wrong?</p>