C# Mvc.UrlHelper类代码示例

 public bool Applies(ShoppingCartQuantityProduct quantityProduct, IEnumerable<ShoppingCartQuantityProduct> cartProducts) {
     if (DiscountPart == null) return false;
     var now = _clock.UtcNow;
     if (DiscountPart.StartDate != null && DiscountPart.StartDate > now) return false;
     if (DiscountPart.EndDate != null && DiscountPart.EndDate < now) return false;
     if (DiscountPart.StartQuantity != null &&
         DiscountPart.StartQuantity > quantityProduct.Quantity)
         return false;
     if (DiscountPart.EndQuantity != null &&
         DiscountPart.EndQuantity < quantityProduct.Quantity)
         return false;
     if (!string.IsNullOrWhiteSpace(DiscountPart.Pattern)) {
         string path;
         if (DiscountPart.DisplayUrlResolver != null) {
             path = DiscountPart.DisplayUrlResolver(quantityProduct.Product);
         }
         else {
             var urlHelper = new UrlHelper(_wca.GetContext().HttpContext.Request.RequestContext);
             path = urlHelper.ItemDisplayUrl(quantityProduct.Product);
         }
         if (!path.StartsWith(DiscountPart.Pattern, StringComparison.OrdinalIgnoreCase))
             return false;
     }
     if (DiscountPart.Roles.Any()) {
         var user = _wca.GetContext().CurrentUser;
         if (user.Has<UserRolesPart>()) {
             var roles = user.As<UserRolesPart>().Roles;
             if (!roles.Any(r => DiscountPart.Roles.Contains(r))) return false;
         }
     }
     return true;
 }

 public static MvcHtmlString ImageActionLink(
     this HtmlHelper helper,
     string imageUrl,
     string altText,
     string actionName,
     string controllerName,
     object routeValues,
     object linkHtmlAttributes,
     object imgHtmlAttributes)
 {
     var linkAttributes = AnonymousObjectToKeyValue(linkHtmlAttributes);
     var imgAttributes = AnonymousObjectToKeyValue(imgHtmlAttributes);
     var imgBuilder = new TagBuilder("img");
     imgBuilder.MergeAttribute("src", imageUrl);
     imgBuilder.MergeAttribute("alt", altText);
     imgBuilder.MergeAttributes(imgAttributes, true);
     var urlHelper = new UrlHelper(helper.ViewContext.RequestContext, helper.RouteCollection);
     var linkBuilder = new TagBuilder("a");
     linkBuilder.MergeAttribute("href", urlHelper.Action(actionName, controllerName, routeValues));
     linkBuilder.MergeAttributes(linkAttributes, true);
     var text = linkBuilder.ToString(TagRenderMode.StartTag);
     text += imgBuilder.ToString(TagRenderMode.SelfClosing);
     text += linkBuilder.ToString(TagRenderMode.EndTag);
     return MvcHtmlString.Create(text);
 }

        protected void Application_PostAuthenticateRequest(Object sender, EventArgs e)
        {
            try
            {
                HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];
                if (authCookie != null)
                {
                    FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
                    JavaScriptSerializer serializer = new JavaScriptSerializer();
                    if (authTicket.UserData == "OAuth") return;

                    var currentUser = serializer.Deserialize<CurrentUserPrincipal>(authTicket.UserData);
                    currentUser.SetIdentity(authTicket.Name);
                    HttpContext.Current.User = currentUser;
                }
            }
            catch (Exception ex)
            {
                ErrorSignal.FromCurrentContext().Raise(ex);
                FormsAuthentication.SignOut();
                HttpCookie oldCookie = new HttpCookie(".ASPXAUTH");
                oldCookie.Expires = DateTime.Now.AddDays(-1);
                Response.Cookies.Add(oldCookie);

                HttpCookie ASPNET_SessionId = new HttpCookie("ASP.NET_SessionId");
                ASPNET_SessionId.Expires = DateTime.Now.AddDays(-1);
                Response.Cookies.Add(ASPNET_SessionId);

                var urlHelper = new UrlHelper(HttpContext.Current.Request.RequestContext);
                Response.Redirect(urlHelper.Action(MVC.OAuth.ActionNames.SignIn, MVC.OAuth.Name));
            }
        }

 public IEnumerable<NotifyEntry> GetNotifications() {
     if ( string.IsNullOrWhiteSpace(_orchardServices.WorkContext.CurrentSite.BaseUrl)) {
         var urlHelper = new UrlHelper(_workContext.HttpContext.Request.RequestContext);
         var url = urlHelper.Action("Index", "Admin", new {Area = "Settings"});
         yield return new NotifyEntry { Message = T("The Warmup feature needs the <a href=\"{0}\">Base Url site setting</a> to be set.", url), Type = NotifyType.Warning };
     }
 }

 public EntryToEntryViewModelMapper(
     IDocumentSession session,
     UrlHelper urlHelper)
 {
     this.session = session;
     this.urlHelper = urlHelper;
 }

    protected void SetLinks(AtomEntry e)
    {
      LogService.Debug("AnnotateService.SetLinks entryId={0}", e.Id);
      var links = e.Links.ToList();
      var url = new UrlHelper(Container.GetInstance<RequestContext>());
      //atom threading extension
      if (e.InReplyTo != null)
      {
        e.InReplyTo.Href = url.RouteIdUri("AtomPubResource", e.InReplyTo.Ref, AbsoluteMode.Force);
        links.Merge(new AtomLink
        {
          Rel = "related",
          Type = "text/html",
          Href = url.RouteIdUri("AtomPubResource", e.InReplyTo.Ref, AbsoluteMode.Force)
        });
      }

      //atom threading extension
      links.Merge(new AtomLink
      {
        Href = url.RouteIdUri("AnnotateEntryAnnotationsFeed", e.Id, AbsoluteMode.Force),
        Rel = "replies",
        Type = Atom.ContentType,
        Count = e.Total,
        Updated = DateTimeOffset.UtcNow
      });
      e.Links = links;
    }

        protected override void HandleUnauthorizedRequest(AuthorizationContext context)
        {
            if (context.HttpContext.Request.IsAjaxRequest())
            {
                var urlHelper = new UrlHelper(context.RequestContext);
                context.HttpContext.Response.StatusCode = 403;
                context.Result = new JsonResult
                {
                    Data = new
                    {
                        Error = "NoPermission",
                        LogOnUrl = urlHelper.Action("index", "login")
                    },
                    JsonRequestBehavior = JsonRequestBehavior.AllowGet
                };
            }
            else
            {
                context.Result = new RedirectToRouteResult(
                                       new RouteValueDictionary
                                   {
                                       { "action", "index" },

                                       { "controller", "error" },

                                       { "id", (int)ErrorType.NoPermission},

                                       {"returnurl",context.RequestContext.HttpContext.Request.Url}
                                   });
            }
        }

        public static string Generate(RequestContext requestContext, NavigationRequest navigationItem, RouteValueDictionary routeValues)
        {
            if (requestContext == null)
                throw new ArgumentNullException("requestContext");
            if (navigationItem == null)
                throw new ArgumentNullException("navigationItem");

            var urlHelper = new UrlHelper(requestContext);
            string generatedUrl = null;

            if (!string.IsNullOrEmpty(navigationItem.RouteName))
            {
                generatedUrl = urlHelper.RouteUrl(navigationItem.RouteName, routeValues);
            }
            else if (!string.IsNullOrEmpty(navigationItem.ControllerName) && !string.IsNullOrEmpty(navigationItem.ActionName))
            {
                generatedUrl = urlHelper.Action(navigationItem.ActionName, navigationItem.ControllerName, routeValues, null, null);
            }
            else if (!string.IsNullOrEmpty(navigationItem.Url))
            {
                generatedUrl = navigationItem.Url.StartsWith("~/", StringComparison.Ordinal) 
                    ? urlHelper.Content(navigationItem.Url) 
                    : navigationItem.Url;
            }
            else if (routeValues.Any())
            {
                generatedUrl = urlHelper.RouteUrl(routeValues);
            }

            return generatedUrl;

        }

        public string GenerateContentUrl(string relativePath)
        {
            var httpRequest = GetCurrentRequest();
            var urlHelper = new UrlHelper(httpRequest.RequestContext, RouteTable.Routes);

            return urlHelper.Content(relativePath);
        }

        public static IHtmlString RenderApplicationUrls(this HtmlHelper helper)
        {
            var url = new UrlHelper(helper.ViewContext.RequestContext);

            var applicationUrls = new
            {
                LoginUrl = url.Action(MVC.Authentication.Login()),
                LogoutUrl = url.Action(MVC.Authentication.Logout()),
                LoginCheckUrl = url.Action(MVC.Authentication.LoginCheck()),
                ListUsersUrl = url.Action("Index", "Api/Users"),
                CreateUserUrl = url.Action("Create", "Api/Users"),
                UpdateUserUrl = url.Action("Update", "Api/Users"),
                DeleteUsersUrl = url.Action("Delete", "Api/Users"),
                ListDashboardPermissionsUrl = url.Action("Index", "Api/DashboardPermissions"),
                ListMessagesUrl = url.Action("Index", "Api/Messages"),
                CreateMessageUrl = url.Action("Create", "Api/Messages"),
                DeleteMessagesUrl = url.Action("Delete", "Api/Messages"),
                ListOrganizationsUrl = url.Action("Index", "Api/Organizations"),
                CreateOrganizationUrl = url.Action("Create", "Api/Organizations"),
                UpdateOrganizationUrl = url.Action("Update", "Api/Organizations"),
                DeleteOrganizationsUrl = url.Action("Delete", "Api/Organizations"),
                ListRolesUrl = url.Action("Index", "Api/Roles")
            };

            var script = @"<script type='text/javascript'>
                        angular.module('colorSoft').constant('ApplicationUrls', <INSERT_URLS>);
                    </script>".Replace("<INSERT_URLS>", CreateJavascriptHash(applicationUrls));

            return MvcHtmlString.Create(script);
        }

        public PackageListViewModel(
            IQueryable<Package> packages,
            DateTime? indexTimestampUtc,
            string searchTerm,
            int totalCount,
            int pageIndex,
            int pageSize,
            UrlHelper url,
            string curatedFeed)
        {
            // TODO: Implement actual sorting
            IEnumerable<ListPackageItemViewModel> items = packages.ToList().Select(pv => new ListPackageItemViewModel(pv));
            PageIndex = pageIndex;
            IndexTimestampUtc = indexTimestampUtc;
            PageSize = pageSize;
            TotalCount = totalCount;
            SearchTerm = searchTerm;
            int pageCount = (TotalCount + PageSize - 1) / PageSize;

            var pager = new PreviousNextPagerViewModel<ListPackageItemViewModel>(
                items,
                PageIndex,
                pageCount,
                page => curatedFeed == null ?
                    url.PackageList(page, searchTerm) :
                    url.CuratedPackageList(page, searchTerm, curatedFeed)
                );
            Items = pager.Items;
            FirstResultIndex = 1 + (PageIndex * PageSize);
            LastResultIndex = FirstResultIndex + Items.Count() - 1;
            Pager = pager;
        }

        /// <summary>
        /// Creates and Action link with a clickable image instead of text.
        /// </summary>
        /// <param name="helper"></param>
        /// <param name="controller">Controller</param>
        /// <param name="action">Action</param>
        /// <param name="parameters">Parameters</param>
        /// <param name="src">Image source</param>
        /// <param name="alt">Alternate text(Optional)</param>
        /// <returns>An HTML anchor tag with a nested image tag.</returns>
        public static MvcHtmlString ActionImage(this HtmlHelper helper, String controller, String action, Object parameters, String src, String alt = "", String title = "")
        {
            var tagBuilder = new TagBuilder("img");
            var urlHelper = new UrlHelper(helper.ViewContext.RequestContext);
            var url = urlHelper.Action(action, controller, parameters);
            var imgUrl = urlHelper.Content(src);
            var image = "";
            var html = new StringBuilder();

            // build the image tag.
            tagBuilder.MergeAttribute("src", imgUrl);
            tagBuilder.MergeAttribute("alt", alt);
            tagBuilder.MergeAttribute("width", "100");
            tagBuilder.MergeAttribute("height", "100");
            tagBuilder.MergeAttribute("title", title);
            image = tagBuilder.ToString(TagRenderMode.SelfClosing);

            html.Append("<a href=\"");
            html.Append(url);
            html.Append("\">");
            html.Append(image);
            html.Append("</a>");

            return MvcHtmlString.Create(html.ToString());
        }

 /// <summary>
 /// Builds main menu
 /// </summary>
 public static MvcHtmlString BuildMainMenuItems(this HtmlHelper helper, UrlHelper urlHelper, string activeItemTitle)
 {
     var sb = new StringBuilder();
     var menuItems = new[]{
         new MenuItem("Главная", urlHelper.RouteUrl("Main")),
         new MenuItem("Программы",urlHelper.RouteUrl("AllTravels")),
         new MenuItem("Расписание", urlHelper.RouteUrl("EventSchedule")),
         new MenuItem("Статьи", urlHelper.RouteUrl("AllArticles")),
         new MenuItem("Фотогалерея", urlHelper.RouteUrl("AllAlbums")),
         new MenuItem("Книги", urlHelper.RouteUrl("AllBooks")),
         new MenuItem("Новости", urlHelper.RouteUrl("AllNews")),
         new MenuItem("Отзывы", "javascript:notImplemented()"),
         new MenuItem("Цены", "javascript:notImplemented()"),
         new MenuItem("Контакты", "javascript:notImplemented()")
     };
     foreach (var menuItem in menuItems)
     {
         sb.AppendLine(
             string.Format("<li {0}><a href='{1}'>{2}</a></li>",
             (menuItem.Title == activeItemTitle) ? "class='active'" : string.Empty,
             menuItem.Url,
             menuItem.Title));
     }
     return new MvcHtmlString(sb.ToString());
 }

        /// <summary>
        /// Called by the ASP.NET MVC framework after the action method executes.
        /// </summary>
        /// <param name="filterContext">The filter context.</param>
        public override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            if (filterContext == null || !filterContext.HttpContext.Request.IsAjaxRequest())
            {
                return;
            }

            // Preparing Json object for AJAX.success processing in forms.js javascript
            string destinationUrl = string.Empty;
            if (filterContext.Result is RedirectResult)
            {
                var result = filterContext.Result as RedirectResult;
                destinationUrl = UrlHelper.GenerateContentUrl(result.Url, filterContext.HttpContext);
            }

            if (filterContext.Result is RedirectToRouteResult)
            {
                var result = filterContext.Result as RedirectToRouteResult;
                var helper = new UrlHelper(filterContext.RequestContext);
                destinationUrl = helper.RouteUrl(result.RouteValues);
            }

            // Rendered context is getting reloaded by AJAX.success in forms.js javascript
            if (filterContext.Result is ViewResult)
            {
                return;
            }

            var jsonResult = new JsonResult { Data = new { resultType = "Redirect", redirectUrl = destinationUrl } };
            filterContext.Result = jsonResult;
        }

        public ActionResult Rsd(string blogPath) {
            Logger.Debug("RSD requested");

            BlogPart blogPart = _blogService.Get(blogPath);

            if (blogPart == null)
                return HttpNotFound();

            const string manifestUri = "http://archipelago.phrasewise.com/rsd";

            var urlHelper = new UrlHelper(ControllerContext.RequestContext, _routeCollection);
            var url = urlHelper.Action("", "", new { Area = "XmlRpc" });

            var options = new XElement(
                XName.Get("service", manifestUri),
                new XElement(XName.Get("engineName", manifestUri), "Orchard CMS"),
                new XElement(XName.Get("engineLink", manifestUri), "http://orchardproject.net"),
                new XElement(XName.Get("homePageLink", manifestUri), "http://orchardproject.net"),
                new XElement(XName.Get("apis", manifestUri),
                    new XElement(XName.Get("api", manifestUri),
                        new XAttribute("name", "MetaWeblog"),
                        new XAttribute("preferred", true),
                        new XAttribute("apiLink", url),
                        new XAttribute("blogID", blogPart.Id))));

            var doc = new XDocument(new XElement(
                                        XName.Get("rsd", manifestUri),
                                        new XAttribute("version", "1.0"),
                                        options));

            Response.Cache.SetCacheability(HttpCacheability.NoCache);
            return Content(doc.ToString(), "text/xml");
        }