I am working with Visual Studio 2019 (.NET 4.7). My project is an ASP.NET MVC web app, without Microsoft Identity.

I try to implement the mechanism of authentication and authorization because I want to use the attributes like [Authorize(Roles = "admins")] on my controllers/actions.

I don’t want to use Microsoft Identity, EF and OWIN.

I started to implement form authentication, and I can get everywhere in my code the current user name with User.Identity.Name which has the same value as FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe) used in the login process.

I can store the roles in the field UserData inside the FormsAuthentication ticket.

Now, I want to implement the roles in order to activate the [Authorize] attributes and to use the function User.IsInRole("***") everywhere in my code.

Can someone help me ?