Url.RouteUrl from an Html helper extension

Question

I'm extending Html.HtmlHelper to render the breadcrumb depending on the page I am:

public static HtmlString RenderBreadCrumb(this HtmlHelper helper, PageType pagetype, object Model)

How do I use Url.RouteUrl inside of an HtmlHelper to render the URL?

Answer 1

You need to create a new UrlHelper instance using a request context.

UrlHelper Url = new UrlHelper(helper.ViewContext.RequestContext);
Url.RouteUrl(…);

Answer 2

Just make a UrlHelper extension instead:

public static string RenderBreadCrumb(this UrlHelper helper, PageType pagetype, object Model)

Then call via:

 @Url.RenderBreadCrumb(pageType, Model)