title: Why can not I read all the descendants of "root" ? C# HTML
body: <p>How do I properly load a combobox object from an HTML page in C #?
  Why can not I read all the descendants of "root" ?</p>
  
  <pre><code>&lt;select name="mainCategory"&gt;
      &lt;option value=""&gt; select1 &lt;/option&gt;
      &lt;option value="21"&gt; Antiques &amp; Art &lt;/option&gt;
      &lt;option value="61"&gt; Office and Advertising &lt;/option&gt;
      &lt;option value="22"&gt; Jewelry &amp; Watches &lt;/option&gt;
      &lt;option value="23"&gt; For Kids &lt;/option&gt;
      &lt;option value="24"&gt; Home &amp; Garden &lt;/option&gt;
      &lt;option value="39"&gt; Erotica &lt;/option&gt;
      &lt;option value="25"&gt; Videos &lt;/option&gt;
      &lt;option value="26"&gt; Company and Industry &lt;/option&gt;
      &lt;option value="27"&gt; Photography &lt;/option&gt;
      &lt;option value="28"&gt; Games &lt;/option&gt;
      &lt;option value="29"&gt; Collections &lt;/option&gt;
      &lt;option value="30"&gt; Computers &lt;/option&gt;
      &lt;option value="31"&gt; Books and Comics &lt;/option&gt;
      &lt;option value="32"&gt; Automotive &lt;/option&gt;
      &lt;option value="33"&gt; Music and Instruments &lt;/option&gt;
      &lt;option value="34"&gt; Clothing, Shoes, Accessories &lt;/option&gt;
      &lt;option value="40" selected="selected"&gt; Other &lt;/option&gt;
      &lt;option value="81"&gt; Crafts &lt;/option&gt;
      &lt;option value="35"&gt; Consumer Electronics &lt;/option&gt;
      &lt;option value="36"&gt; Sport and Tourism &lt;/option&gt;
      &lt;option value="37"&gt; Phones &amp; Accessories &lt;/option&gt;
      &lt;option value="38"&gt; Health and Beauty &lt;/option&gt;
      &lt;option value="62"&gt; Food &lt;/option&gt;
  &lt;/select&gt; 
  </code></pre>
  
  <p>By using such code :</p>
  
  <pre><code>HtmlElement root = this.webBrowser1.Document.GetElementsByTagName("select")[2];
  </code></pre>
  
  <p>or</p>
  
  <pre><code>HtmlElement root = this.webBrowser1.Document.GetElementById("mainCategory");
  </code></pre>
  
  <p>Element "root" contains only one child - "select1", which there are no more descendants.
  Why can not I read all the descendants of "root" ?</p>