How to Create Treeview from menu

i Have Used Bellow Code For This

 private void DrawTreeMenu()
  {
    foreach (ToolStripMenuItem t in msMainMenu.Items)
    {
      string mm = t.Text;
      TreeNode tn = new TreeNode(mm);
      tvMenu.Nodes.Add(tn);
      AttachNodeMenu(tvMenu.Nodes[tvMenu.Nodes.Count - 1], t);
    }
  }
  private void AttachNodeMenu(TreeNode tn, ToolStripMenuItem t)
  {
   foreach (ToolStripDropDownItem d in t.DropDownItems)
   {
     string mm = d.Text;
     TreeNode tnc = new TreeNode(mm);
     n.Nodes.Add(tnc);
     AttachNodeMenu(tn.Nodes[tn.Nodes.Count - 1], (ToolStripMenuItem)d);
   }
  }