How to pass string as parameter in ASP.Net MVC - asp.net

Question

I am trying to make a simple sample of passing string parameter in URL not using the queryString at this example. First of all I added a new MapRouteto RouteConfig.cs file as
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
routes.MapRoute(
name: "app",
url: "{controller}/{action}/{name}"
);
and in Controller I have
public class AppController : Controller
{
public string Index(string name)
{
return HttpUtility.HtmlEncode("Hello " + name );
}
}
but the view is not displaying the string parameter. For example a URL like this http://localhost:59013/App/Index/Ali only return Hello!
Why is this happening?
Update
routes.MapRoute(
name: "app",
url: "{controller}/{action}/{name}",
defaults: new {action = "Index" }
);
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);

Answer 1

First, you need to change the order of your registered routes so the default will be the last.
Secondly, your app route pattern is wrong and will always collide with the default route. You better change its pattern to
url: "App/Index/{name}"
Or perhaps to the more friendlier
url: "App/{name}"
Both with
defaults: new { controller = "App", action = "Index" }
So that your routes would look like:
routes.MapRoute(
name: "app",
url: "App/{name}",
defaults: new { controller = "App", action = "Index" }
);
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
See MSDN