ASP.NET MVC 4 RedirectToAction无法正常工作

Question

I created an MVCApplication and it works in a directory on my server like this:

 http://www.mywebsite.com/MyApp/

When I use RedirectToAction like this;

 return RedirectToAction("Index", "Home");

It goes to;

 http://www.mywebsite.com/Home/Index

But I want to redirect to;

 http://www.mywebsite.com/MyApp/Home/Index);

How can I resolve it?

Edit---

My routeconfig is like this;

routes.MapRoute(
    name: "Default",
    url: "{controller}/{action}/{id}",
    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
); 

Answer 1

These redirects follow your route configuration. The default route is {siteUrl}/{controller}/{action}, which is why when you give it the "Index" action and the "Home" controller, you get the URL you're seeing.

You need to specify a new route similar to this:

MapRoute("CustomRoute", "MyApp/{controller}/{action}";

You can then redirect to it like this:

RedirectToRoute("CustomRoute", new {Controller = "Home", Action = "Index" });

EDIT to clarify for the comments -

It is also possible to solve this using IIS to make MyApp an application. This is the right solution only if MyApp is the only value you ever want at the beginning of your route for this site. If, for example, you sometimes need MyApp/{controller}/{action} and other times you need OtherSubfolder/{controller}/{action}, you need to use the routes as I have outlined above (or use areas) instead of just updating IIS.

I am assuming you want the solution using MVC, so that is what is here, but you should also consider the IIS application if that's the right solution for you.