Foreach every Subitem in a MenuStrip

Question

I want to get all the SubItems of my MenuStrip, So I can change them all at once.

I'am trying things like the following, but they aren't working:

foreach (ToolStripMenuItem toolItem in menuStrip1.DropDownItems)
{
      //Do something with toolItem here
}

Can someone help me out coding a good foreach loop for getting all the SubMenuItems(DropDownItems) from the MenuStrip?

EDIT now trying to work with the following Recursive method:

private void SetToolStripItems(ToolStripItemCollection dropDownItems)
        {
            try
            {
                foreach (object obj in dropDownItems)
                {
                    if (obj.GetType().Equals(typeof(ToolStripMenuItem)))
                    {
                        ToolStripMenuItem subMenu = (ToolStripMenuItem)obj;

                        if (subMenu.HasDropDownItems)
                        {
                            SetToolStripItems(subMenu.DropDownItems);
                        }
                        else
                        {

                        }
                    }
                }
            }
            catch
            {

            }
        }

Answer 1

Try this:

List<ToolStripMenuItem> allItems = new List<ToolStripMenuItem>();
foreach (ToolStripMenuItem toolItem in menuStrip.Items) 
{
    allItems.Add(toolItem);
    //add sub items
    allItems.AddRange(GetItems(toolItem));
}  
private IEnumerable<ToolStripMenuItem> GetItems(ToolStripMenuItem item) 
{
    foreach (ToolStripMenuItem dropDownItem in item.DropDownItems) 
    {
        if (dropDownItem.HasDropDownItems) 
        {
            foreach (ToolStripMenuItem subItem in GetItems(dropDownItem))
                yield return subItem;
        }
        yield return dropDownItem;
    }
}