ASP.NET MVC4 routing issue

Question

I've searched Stack for ages, read the MSDN docs and used Bing but cannot see why this won't work! I've got the relevant code below + the routes. The route called `Browse` works just fine, but the `productCode` param for the `Details` route is always equal to nothing. If I make any mods I keep getting the 'resource not found' 404 page. ``` ' Lives in controller called 'Details' ' Usage: site.com/details/abc123 Function Index(productCode As String) As ActionResult ' Lives in controller called 'Browse' ' Usage: site.com/browse/scifi/2 Function Index(genre As String, Optional page As Integer = 1) As ActionResult ``` The routes are: ``` routes.MapRoute( _ "Browse", _ "{controller}/{genre}/{page}", _ New With {.controller = "Browse", .action = "Index", .id = UrlParameter.Optional, .page = UrlParameter.Optional} ) routes.MapRoute( _ "Details", _ "details/{productCode}", _ New With {.controller = "Details", .action = "Info", .productCode = UrlParameter.Optional} ) ```

Accepted Answer

The order does matter when defining your routes.

When you request `site.com/details/abc123` I think it matches your first route.

You will get

`controller = "details"`

`action = "Index"`

`genre = "abc123"`

Which is why your productCode is null.

Switch the two `route.MapRoute` statements around, it should fix your problem.

Your second route does have action set to `info` rather than `index`, but i'm assuming that is a typo?

ASP.NET MVC4 routing issue

Solution

Problem