.net web treeview 如何获得新添加到节点

#region 将MunuStrip控件中的信息添加到treeView控件中
/// <summary>
/// 读取菜单中的信息
/// </summary>
/// <param name="treeV">TreeView控件</param>
/// <param name="MenuS">MenuStrip控件</param>
public void GetMenu(TreeView treeV, MenuStrip MenuS)
{
for (int i = 0; i < MenuS.Items.Count; i++)
{
TreeNode newNode1 = treeV.Nodes.Add(MenuS.Items[i].Text);
ToolStripDropDownItem newmenu = (ToolStripDropDownItem)MenuS.Items[i];
if (newmenu.HasDropDownItems && newmenu.DropDownItems.Count > 0)
{
for (int j = 0; j < newmenu.DropDownItems.Count; j++)
{
TreeNode newNode2 = newNode1.Nodes.Add(newmenu.DropDownItems[j].Text);
ToolStripDropDownItem n