private void PopulateMenus()
    {
        IEnumerable <FitnessManagement.Data.Menu> menus = securityProvider.GetAllMenus(null);

        foreach (FitnessManagement.Data.Menu menu in menus)
        {
            MenuItem menuItem = new MenuItem(menu.Title, menu.ID.ToString());
            menuItem.NavigateUrl = "~/" + menu.NavigationTo;

            PopulateChildMenu(menuItem, menu.ID);

            menuDefault.Items.Add(menuItem);
        }
    }