禁用TabBar的导航

Question

是否可以禁用TabBarController的导航？

背景：我想自己做事件处理......

        ViewControllerSelected += (sender, e) =>
        {
            // Take action based on the tab being selected
            switch (TabBar.SelectedItem.Title)
            {
                case "Test":
                    // Do something... like your own navigation
                    break;
            }
        };

非常感谢你的帮助。