c# - Redirect to login when unauthorized in ASP.NET Core

Question

In the previous ASP.NET MVC, there was an option to redirect to the login action, if the user was not authenticated.

I need the same thing with ASP.NET Core, so I:

1. created a ASP.NET Core project from the Visual Studio template
2. added [Authorize] to some arbitrary action
3. opened the corresponding view in my browser

I don't expect a redirect because I haven't configured it. BUT, it automatically redirects to the login action!

Where/how is this option set?

Answer 1

With the current aspnet core version (2.1.0), this has changed, now you can use the extensions:

   services.ConfigureApplicationCookie(options => options.LoginPath = "/login");

or

 services
         .AddAuthentication()
         .AddCookie(options =>
         {
             options.LoginPath = "/login";
             options.LogoutPath = "/logout";
         });

You can see more about migrating in to 2.0 in this article.