title: Find the level of Deepest child Treenode
body: <p>I have treenode &amp; i would like to find the deepest child in the treenode.
  if there are 2 child nodes with <code>level 11</code> &amp; <code>level 13</code> respectively then i need unction to return me the value 13.</p>
  
  <p>How can i do that ?</p>
  
  <pre><code>public int FindLevel(TreeNode oParentNode)
  {
     counter++;
    forech(TreeNode oSubNode in oParentNode.Nodes)
    {
      FindLevel(oParentNode);
    }
  
   return Counter;
  }
  </code></pre>