public ActionResult AssignSubMenuItem(int id = 0)
        {
            AssignSubMenuModel model = new AssignSubMenuModel();

            IEnumerable <SelectListItem> MainMenuCategory = (from n in db.tblCategories select n).AsEnumerable().Select(n => new SelectListItem()
            {
                Text = n.Name, Value = n.CategoryId.ToString()
            });

            ViewBag.MainMenu = new SelectList(MainMenuCategory, "Value", "Text", "MenuCategory");

            IEnumerable <SelectListItem> SubMenu = (from n in db.tblSubItems select n).AsEnumerable().Select(n => new SelectListItem()
            {
                Text = n.Name, Value = n.SubItemId.ToString()
            });

            ViewBag.SubMenu = new SelectList(SubMenu, "Value", "Text", "SubMenu");

            return(View(user.EditSubMenu(id)));
        }