Get url from MvcSiteMapProvider by key with parameter - asp.net-mvc

Question

I usually get the url from a node with the following code:
MvcSiteMapProvider.SiteMaps.Current.FindSiteMapNodeFromKey("AccountDetailsKey").Url
Now I have a node with a parameter. But how can I get the url for that node. So in the below example we need the url of the "AccountDetailsKey" node.
<mvcSiteMapNode key="BeherenAccountKey" title="Zoeken accounts" controller="BeherenAccount" action="BeherenAccount">
<mvcSiteMapNode key="AccountDetailsKey" title="Account details" controller="BeherenAccount" action="AccountDetails" preservedRouteParameters="gebruikersnaam" visibility="!SiteMapHelper,!MainMenu,*" />
</mvcSiteMapNode>
Details action:
[Route("account/details/{gebruikersnaam}")]
public ActionResult AccountDetails(string gebruikersnaam)
{
return this.View((object)gebruikersnaam);
}
De routeconfig:
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapMvcAttributeRoutes();
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional });
}
Offcourse we could use the following for generating an url to the details page with regular MVC razor code:
#Url.Action("AccountDetails", "BeherenAccount", new { gebruikersnaam = User.Identity.Name.ToLower().Replace("domain\\", "") })
The thing is that we don't want to use action and controller names in our code. We want to generate all the urls from the sitemap. Everything works fine in the whole application but can't get this details page working. We don't have a DynamicNodeProvider because we don't care for separate titles, seo etc because it is an administrator application.
The application shows the loggedin user in the main menu (_Layout page) and this is an url to his own detail page.
So when the loggedin user has username "abc", the details url must be "account/details/abc".

Answer 1

When using preservedRouteParameters, the SiteMap does not automatically generate the route values that are supposed to be placed onto the node. They come from the current request of the page. Normally, when doing this you are expected to provide URLs using ActionLink, Action, RouteLink, or UrlHelper, as would typically be the case when doing CRUD operations, since the links would need to be derived from the database data.
#Html.ActionLink("Gebruikersnaam", "AccountDetails", "BeherenAccount", new { gebruikersnaam = "Value" }, null)
Alternatively, if no route value named gebruikersnaam exists in the current request, you can supply it manually.
string url;
var node = MvcSiteMapProvider.SiteMaps.Current.FindSiteMapNodeFromKey("AccountDetailsKey");
if (node != null)
{
node.RouteValues["gebruikersnaam"] = "Value";
url = node.Url;
}
When you set a route value outside of an ISiteMapNodeProvider or dynamic node provider, the value that is set will only last for the lifetime of the current request.
NOTE: I really don't understand the exact problem you are having with the above code. In my test project it is working fine regardless of what page you are on. If you want to investigate further, you can use the code from Controlling URL Behavior to mimic how the SiteMapNodeUrlResolver uses the MVC UrlHelper.