asp.net webforms routing: optional parameters

Question

I want to add optional parameters in my routing table. For example I would like the users to browse a product catalog like this: http://www.domain.com/browse/by-category/el

Answer 1

I'd just create the separate route.

That said, you could define a custom RouteHandler that based on some convention you define, automatically send those special cases as if you had a different route.

Alternatively you could use the custom RouteHandler along with a convention, to avoid having to specify the specific page in your routes. That's the equivalent of what asp.net MVC does.