ASP.Net Kernel - Reason for Policy Authentication and Cookie on Prohibited Page

Question

I use CookieAuthentication and Policy to check users and redirect them to the Account / Forbidden URL when it fails ... On the page I want to display some details, for example

• The page they were trying to access.
• The reason for the failure.
• And other debugging information ...

There are 6 types of user levels in my application. At the moment, it redirects users to the "Prohibition" page when it does not respond to UserRole ... but I could not trace which page they tried to access before Forbidden occurred ...

ConfigureServices () in Startup.cs

services.AddAuthorization(options =>
{
    options.AddPolicy("AdminOnly", policy => policy.RequireRole("Admin"));
});

Configure () in Startup.cs

app.UseCookieAuthentication(new CookieAuthenticationOptions
{
    AuthenticationScheme = "Cookie",
    LoginPath = new PathString("/Account/Login/"),
    AccessDeniedPath = new PathString("/Account/Forbidden/"),
    AutomaticAuthenticate = true,
    AutomaticChallenge = true
});

My controller:

[Authorize(Policy = "AdminOnly")]
public class MyController : Controller
{
    ....
}