Add foreign key to AspNetUser table

Question

I\'ve created an ASP.NET Core Razor Pages application with user identities.

The created project includes a migration that adds all the user tables, such as AspNetU

Answer 1

The default identity uses IdentityUser, it is not exposed to the project code but you can create a new user model (e.g. AppUser) that is derived from IdentityUser, then add the foreign keys to the new user model:

public class AppUser : IdentityUser
{
    public int AddressId { get; set; }
    public UserAddress Address { get; set; }
}

public class UserAddress
{
    public int Id { get; set; }

    // ...

    public string UserId { get; set; }
    public AppUser User { get; set; }
}

Then replace IdentityUser in startup with AppUser :

services.AddDefaultIdentity<AppUser>();

Then create new migrations to create the new user table.