为什么在ASP.NET MVC示例中路径信息路由不起作用？

Question

I am reading the book C# 6.0 and the .NET 4.6 Framework and I was looking at the customized routing example routes.MapRoute("Contact", "Contact/{*pathinfo}", new { controller = "Home", action = "Contact" }); . The authors says that this should allow me to put in the url http://localhost:64173/Home/Contact/Foo/Bar and still be directed to the Contact page, because of the addition of *pathinfo . However, it is simply giving me a 404 Not Found. Specifically the authors state:

...adding {*pathinfo} to the pattern... allows any number of additional URL parameters... Now when you enter the URL http://localhost:64173/Home/Contact/Foo/Bar it still shows the Contact page.

But I still get the 404 Error. I noted that http://localhost:64173/Home/Contact/Foo as well as http://localhost:64173/Contact/Foo/parm1/parm2/parm3 . All of these redirect back to the Contact page. Here is what the full routing looks like:

public class RouteConfig
    {
        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
            routes.MapRoute("Contact", "Contact/{*pathinfo}", new { controller = "Home", action = "Contact" });
            routes.MapRoute("About", "About/{*pathinfo}", new { controller = "Home", action = "About" });
            routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
            );
        }
    }

Thanks, I know this probably obvious, but I can't tell if the author made a mistake or if I'm missing something in my routes.

Note1: I also tried *pathInfo (with the "I" capitalized). This did not work either.

Note2: Navigating to http://localhost:64173/Home/Contact/Foo works just fine.

Answer 1

You can't handle a request to http://localhost/Contact/Foo from a controller other than ContactController unless you inherit ContactController from something other than the base controller and do some implementation work to make that kind of Url rewrite happen. The excerpt to which you are referring simply allows you to pass parameters as Url segments without explicitly specifying all the parameters in the Url template.

Answer 2

I have encountered with this problem while reading the book

Pro C# 7: With .NET and .NET Core 8th Edition by Andrew Troelsen and Phil Japiks.

There is wrote "Add a new route" :

routes.MapRoute("Contact", "Contact/{*pathinfo}", new { controller = "Home", action = "Contact" });

and after you add a new route you need to open test URL:

http://localhost:60466/Home/Contact/Foo/Bar

but there is a mistake, you need to open URL above, without

Home

like this http://localhost:60466/Contact/Foo/Bar