“context.Resource as AuthorizationFilterContext” returning null in ASP.NET Core 3.0

Question

I am trying to implement a custom authorization requirement following a tutorial. It seems like context.Resource no longer contains AuthorizationFilterCo

Answer 1

Changes in startup.cs if you are using Rout attribute in controllers You can replace this

  app.UseEndpoints(endpoints =>
        {
            endpoints.MapControllerRoute(
               name: "home",
               pattern: "{controller=Home}");
        });

with this in Configure()

        app.UseMvc(routes =>
        {
            routes.MapRoute(
                name: "home",
                template: "{controller=Home}");
        });

and disable endpoint routing with this in ConfigureSevices()

   services.AddMvc().AddMvcOptions(mvcopt=> { mvcopt.EnableEndpointRouting = false;});

Works in Asp .Net Core 5 as well