gistfile1.txt

These urls work:

- /News-Search/TechForum/Stockholm/
- /News-Search/TechForum/
- /News-Search/

RouteConfig.cs

routes.MapContentRoute(
    name: "Search",
    url: "{language}/{node}/{event}/{location}/{action}",
    defaults: new { action = "Index", @event = UrlParameter.Optional, location = UrlParameter.Optional },
    parameters: new MapContentRouteParameters {
        Constraints = new { node = new ContentTypeConstraint<SearchPage>(matchInheritedTypes: true) }
    }
);

SearchController.cs

public class SearchController : PageController<SearchPage>
{
    public ActionResult Index(SearchPage currentPage, string @event, string location)
    {
        return Content(string.Format("{0}: {1} in {2}", currentPage.PageName, @event, location));
    }
}

SearchPage.cs

[ContentType(GUID = "3FE318E2-2522-4949-914C-2B44B2C6EE55", DisplayName = "Search Page", GroupName = "Content")]
public class SearchPage : PageData {
    
}