namespace DittNameSpace
{
        [ExitHttpsIfNotRequired]
        [RedirectPageAttribute]
    public class SiteMapPageController : PageController<SiteMapPage>
    {
        private readonly INavigationProvider _navigationProvider;
        private readonly ISettingsProvider _siteSettingsProvider;
        private readonly IPageViewModelFactory _viewModelfactory;
        private readonly IContentLoader _contentLoader;

        public SiteMapPageController(IPageViewModelFactory viewModelFactory, INavigationProvider navigationProvider, ISettingsProvider siteSettingsProvider, IContentLoader contentLoader)
        {
            _viewModelfactory = viewModelFactory;
            _navigationProvider = navigationProvider;
            _siteSettingsProvider = siteSettingsProvider;
            _contentLoader = contentLoader;
        }

        public ActionResult Index(SiteMapPage currentPage)
        {
            var model = _viewModelfactory.CreateViewModel<SiteMapPageViewModel>(currentPage) as SiteMapPageViewModel;

            return View(model);
        }

        public ActionResult SiteMapTree(SiteMapPage currentPage)
        {
            var startPage = _contentLoader.Get<PageData>(_siteSettingsProvider.StartPage);
            var model = _navigationProvider.GetPagesForSiteMap(startPage, new Navigation());

            return View(model);
        }
    }
}

GetPagesForSiteMap metoden;

 public INavigation GetPagesForSiteMap(PageData currentPage, INavigation nav)
        {
            var children = _contentLoader.GetChildren<PageData>(currentPage.ContentLink);
            children = _pageDataExtensionsService.FilterVisibleInMenu(children);
            children = _pageDataExtensionsService.FilterForVisitor(children);

            var subNavItems = nav.Items.ToList();

            try
            {
                subNavItems.AddRange(children.Select(child => new NavigationItem
                {
                    Children = GetHierarchyRecursive(child, currentPage),
                    Title = child.PageName,
                    Href = child.LinkURL
                }));
            }
            catch (NullReferenceException e)
            {
                _logManager.Info("Error in menu generation {0}", e.Message);
            }

            nav.Items = subNavItems;

            return nav;
        }

INavigation-interfacet;

namespace DittNameSpace
{
    public interface INavigation
    {
        bool Active { get; set; }
        bool Expanded { get; set; }

        /// <summary>
        ///     Navigation items
        /// </summary>
        IEnumerable<INavigationItem> Items { get; set; }

        /// <summary>
        ///     Css class for this navigation
        /// </summary>
        String CssCls { get; set; }

        /// <summary>
        ///     Element Id for this navigation
        /// </summary>
        String Id { get; set; }

        string StartPageLink { get; set; }

        string SearchPageLink { get; set; }
    }
}