get root node value null
<p>I have a problem with a <code>TreeView</code>. My <code>TreeView</code> structure is something like this:</p>

<pre><code> Root
  !-&gt;child
       !-&gt;subchild
</code></pre>

<p>Now my requirement is that when I click on subchild node I get the information I want but when I click on root node the page and the children should refresh.</p>

<p>I hope you understand my question. If anybody knows how to do this please help me. Thanks.</p>
