how to find child nodes at root node [TreeView]

Question

 ROOT
      A 
        B
          C 
            D 
              E
        T
      F
      G
        X

I want to find E Node\'s parent nodes(it i

Answer 1

    private TreeNode GetNode(string key)
    {
        TreeNode n = null ;
        n = GetNode(key, Tree.Nodes);
        return n;
    }
    private TreeNode GetNode(string key,TreeNodeCollection nodes)
    {
        TreeNode n = null;
        if (nodes.ContainsKey(key))
            n = nodes[key];
        else
        {
            foreach (TreeNode tn in nodes)
            {
                n = GetNode(key, tn.Nodes);
                if (n != null) break;
            }
        }

        return n;
    }