how do I iterate over top level context menu strip

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context-menu

I need to loop through all the top level contextmenustrip dropdown items.

So, I set cms.Items[0] but this gives an error with the foreach loop: "foreach cannot operate on variables of type toolstripitem".

How can I loop through just the cms.Items[0] top level (dropdown) items?

Thanks...

            cmsListBox = new ContextMenuStrip();
            cmsListBox.Items.Clear();
            cmsListBox.Opening += new System.ComponentModel.CancelEventHandler(cmsListBox_Opening);

            listbox_font_size = new ToolStripMenuItem("Font Size");
            cmsListBox.Items.Add(listbox_font_size);
            listbox_font_size.DropDownItems.Add("10");
            listbox_font_size.DropDownItems.Add("12");
            listbox_font_size.DropDownItemClicked += new ToolStripItemClickedEventHandler(Listbox_Font_Size_Menu_ItemClicked);

            ToolStripMenuItem listbox_expander_bar_vertical_size = new ToolStripMenuItem("Expander Vertical Size");
            cmsListBox.Items.Add(listbox_expander_bar_vertical_size);
            listbox_expander_bar_vertical_size.DropDownItems.Add("200");
            listbox_expander_bar_vertical_size.DropDownItems.Add("400");
            listbox_expander_bar_vertical_size.DropDownItemClicked += new ToolStripItemClickedEventHandler(Listbox_Expander_Bar_Vertical_Size_Menu_ItemClicked);

            listBoxTopLevelChecklist.ContextMenuStrip = cmsListBox;


ContextMenuStrip cms = (ContextMenuStrip)sender;

foreach (ToolStripMenuItem item in cms.Items[0])
{
    foreach (ToolStripMenuItem dditem in item.DropDownItems)
    {
        dditem.Checked = true;
    }
{