ICSharpCode.Core.ToolBarDropDownButton.CreateDropDownItems C# (CSharp) Method

        void CreateDropDownItems()
        {
            // let's assume that if a menuBuilder exists,
            // as in the Search Results panel or the Class
            // Browser toolbar, it will handle this step.
            if (menuBuilder != null) {
                return;
            }

            // also, let's prevent a null exception
            // in the event that there are no subitems
            if (subItems == null || subItems.Count==0) {
                return;
            }

            DropDownItems.Clear();
            foreach (object item in subItems)
            {
                if (item is ToolStripItem)
                {
                    DropDownItems.Add((ToolStripItem)item);
                    if (item is IStatusUpdate)
                    {
                        ((IStatusUpdate)item).UpdateStatus();
                        ((IStatusUpdate)item).UpdateText();
                    }
                }
                else
                {
                    ISubmenuBuilder submenuBuilder = (ISubmenuBuilder)item;
                    DropDownItems.AddRange(submenuBuilder.BuildSubmenu(codon, caller));
                }
            }
        }