C# - Ordinamento struttura dati - menu e sotto menu

[Amon Ra]

ho risolto cosi con una funzione ricorsiva

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MenuItems unsortedMenuItems = createMenuItems();

            MenuItems menuItems = GetMenuItems(unsortedMenuItems, Guid.Empty.ToString());

        }

        private MenuItems GetMenuItems(MenuItems unsortedMenuItems, string guid)
        {
            MenuItems menuItems = new MenuItems();
            foreach(MenuItem mi in unsortedMenuItems)
            {
                if (mi.ParentMenuItemId.Equals(guid))
                {
                    menuItems.Add(mi);
                }
            }
            foreach (MenuItem mi in menuItems)
                mi.ChildMenuItems = GetMenuItems(unsortedMenuItems, mi.MenuItemId);

            return menuItems;
        }
        private MenuItems createMenuItems()
        {
            string menuid1 = Guid.NewGuid().ToString();
            string menuid2 = Guid.NewGuid().ToString();
            string submenuid1 = Guid.NewGuid().ToString();
            string submenuid2 = Guid.NewGuid().ToString();
            MenuItems menuItems = new MenuItems();

            MenuItem menuItem = new MenuItem();

            #region menu1

            menuItem.MenuItemId = menuid1;
            menuItem.ParentMenuItemId = Guid.Empty.ToString();
            menuItem.Description = "menu1";
            menuItem.Order = 0;
            menuItem.Type = MenuType.UNDEFINED;
            menuItems.Add(menuItem);

            menuItem = new MenuItem();
            menuItem.MenuItemId = submenuid1;
            menuItem.ParentMenuItemId = menuid1;
            menuItem.Description = "menu1-submenu1";
            menuItem.Order = 0;
            menuItem.Type = MenuType.UNDEFINED;
            menuItems.Add(menuItem);

            menuItem = new MenuItem();
            menuItem.MenuItemId = submenuid2;
            menuItem.ParentMenuItemId = menuid1;
            menuItem.Description = "menu1-submenu2";
            menuItem.Order = 1;
            menuItem.Type = MenuType.UNDEFINED;
            menuItems.Add(menuItem);

            menuItem = new MenuItem();
            menuItem.MenuItemId = Guid.NewGuid().ToString();
            menuItem.ParentMenuItemId = submenuid2;
            menuItem.Description = "menu1-submenu2-sub3";
            menuItem.Order = 1;
            menuItem.Type = MenuType.UNDEFINED;
            menuItems.Add(menuItem);
            #endregion

            #region menu2

            menuItem = new MenuItem();
            menuItem.MenuItemId = menuid2;
            menuItem.ParentMenuItemId = Guid.Empty.ToString();
            menuItem.Description = "menu2";
            menuItem.Order = 1;
            menuItem.Type = MenuType.UNDEFINED;
            menuItems.Add(menuItem);

            menuItem = new MenuItem();
            menuItem.MenuItemId = Guid.NewGuid().ToString();
            menuItem.ParentMenuItemId = menuid2;
            menuItem.Description = "menu2-submenu1";
            menuItem.Order = 0;
            menuItem.Type = MenuType.UNDEFINED;
            menuItems.Add(menuItem);

            menuItem = new MenuItem();
            menuItem.MenuItemId = Guid.NewGuid().ToString();
            menuItem.ParentMenuItemId = menuid2;
            menuItem.Description = "menu2-submenu2";
            menuItem.Order = 1;
            menuItem.Type = MenuType.UNDEFINED;
            menuItems.Add(menuItem);

            menuItem = new MenuItem();
            menuItem.MenuItemId = Guid.NewGuid().ToString();
            menuItem.ParentMenuItemId = menuid2;
            menuItem.Description = "menu2-submenu3";
            menuItem.Order = 2;
            menuItem.Type = MenuType.UNDEFINED;
            menuItems.Add(menuItem);
            #endregion

            return menuItems;
        }
    }