How to ignore route in asp.net forms url routing

Question

I am using the .NET 3.5 SP1 framework and I've implemented URL routing in my application. I was getting javascript errors:

Error: ASP.NET Ajax client-side framework failed to load.
Resource interpreted as script but transferred with MIME type text/html.
ReferenceError: Can't find variable: Sys

Which I believe is because my routing is picking up the microsoft axd files and not properly sending down the javascript. I did some research and found that I could use Routes.IgnoreRoute, which should allow me to ignore the axd like below:

Routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

But, when I add that line to my Global.asax I get this error:

CS1061: 'System.Web.Routing.RouteCollection' does not contain a definition for 'IgnoreRoute' and no extension method 'IgnoreRoute' accepting a first argument of type 'System.Web.Routing.RouteCollection' could be found (are you missing a using directive or an assembly reference?)

I've got the System.Web.Routing namespace imported, any ideas?

Answer 1

You don't need to reference ASP.NET MVC. You can use the StopRoutingHandler which implements IRouteHandler like so:

routes.Add(new Route("{resource}.axd/{*pathInfo}", new StopRoutingHandler()));

This is part of .NET 3.5 SP1 and doesn't require MVC. The IgnoreRoutes method is a convenience extension method which is part of ASP.NET MVC.