Question

I have this route mapped:

routes.MapRoute(
    "SingleUser", // Route name
    "Users/{username}", // URL with parameters
    new {area="", controller = "Users", action = "SingleUser"}, // Parameter defaults
 );

Shouldn’t this code:

return RedirectToAction("Index", "Users", new {username = "someUser"});

redirect to this URL: localhost/Users/someUser?

It instead returns me to: localhost/Users?username=someUser

Answer 1

If you’ve defined a specialized route, then you should use RedirectToRoute.

return RedirectToRoute("SingleUser", new { username = "someUser" });

What’s happening is that MVC is falling back to the default route (“{controller}/{action}”).

Use RedirectToAction when you don’t have a specialized route defined.

Same goes for generating links with ActionLink and RouteLink.