コンテキストメニューの再構築後サブメニューが表示されない

    WithEvents TEST_ContextMenu As New ContextMenu
    Dim TEST_Menu1 As New MenuItem

    Private Sub TreeView1_MouseUp(ByVal sender As Object, ByVal e As
                 System.Windows.Forms.MouseEventArgs) Handles TreeView1.MouseUp

        Dim Node As TreeNode = TreeView1.GetNodeAt(e.X, e.Y)

        If IsNothing(Node) = False Then
            Dim Viewpoint As New Point(e.X, e.Y)
            TEST_ContextMenu.Show(TreeView1, Viewpoint)
        End If

    End Sub

    ByVal e Private Sub Form2_Load(ByVal sender As Object,e As System.EventArgs)   Handles MyBase.Load
        TEST_ContextMenu.MenuItems.Add(TEST_Menu1)
    End Sub

    Private Sub TEST_ContextMenu_Popup(ByVal sender As Object, ByVal e As
                               System.EventArgs) Handles TEST_ContextMenu.Popup
        TEST_Menu1.MenuItems.Clear()
        Dim TEST_SubMenu1 As New MenuItem
        TEST_SubMenu1.Text = "TEST1"
        Dim TEST_SubMenu2 As New MenuItem
        TEST_SubMenu2.Text = "TEST2"

        TEST_Menu1.MenuItems.Add(TEST_SubMenu1)
        TEST_Menu1.MenuItems.Add(TEST_SubMenu2)

    End Sub

--編集--AddMenu()メソッドがおかしかったのでなおしました(^^;



private void AddMenu(TreeNode ANode,MenuItem AMenu)

{

    foreach(TreeNode n in ANode.Nodes)

    {

        MenuItem m = AMenu.MenuItems.Add(n.Text);

        if (n.Nodes.Count > 0) AddMenu(n,m);

    }

}



private void contextMenu1_Popup(object sender, System.EventArgs e)

{

    ContextMenu cm = sender as ContextMenu;

    if (cm != null)

    {

        cm.MenuItems.Clear();

        TreeNode node = treeView1.SelectedNode;

        if (node != null)

        {

            MenuItem mi = new MenuItem(node.Text);

            AddMenu(node,mi);

            cm.MenuItems.Add(mi);

        }

    }

}



private void AddNode(TreeNode ANode,string APath)

{

    foreach(string dir in System.IO.Directory.GetDirectories(APath))

    {

        if(System.IO.Directory.GetDirectories(dir).Length > 0)

        {

            TreeNode node = ANode.Nodes.Add(System.IO.Path.GetFileName(dir));

            AddNode(node,dir);

        }



        foreach(string file in System.IO.Directory.GetFiles(dir))

        {

            ANode.Nodes.Add(System.IO.Path.GetFileName(file));

        }

    }

}



private void Form1_Load(object sender, System.EventArgs e)

{

    treeView1.Nodes.Clear();

    string rootStr = @"C:\\";  //ここは適当に変えてください

    TreeNode root = treeView1.Nodes.Add(rootStr);

    AddNode(root,rootStr);

    root.ExpandAll();

    treeView1.SelectedNode = root;

}

private void contextMenu1_Popup(object sender, System.EventArgs e)
{
    ContextMenu cm = sender as ContextMenu;
    if (cm != null)
    {
        cm.MenuItems.Clear();
        TreeNode node = treeView1.SelectedNode;
        if (node != null)
        {
            if (node.Parent != null)
            {
                foreach(TreeNode n in node.Parent.Nodes)
                {
                    MenuItem mi = new MenuItem(n.Text);
                    AddMenu(n,mi);
                    cm.MenuItems.Add(mi);
                }
            }
        }
    }
}