问如何在现有数据库ASP.NET核心MVC和EF核心(DB-First)中使用身份

EN

public partial class HotelServiceContext : IdentityDbContext<User, Role, int>
{
    public HotelServiceContext()
    {
    }

    public HotelServiceContext(DbContextOptions<HotelServiceContext> options)
        : base(options)
    {
    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
        modelBuilder.Entity<User>().ToTable("Users");
        modelBuilder.Entity<IdentityUserLogin<int>>().ToTable("UserLogins");
        modelBuilder.Entity<IdentityUserToken<int>>().ToTable("UserTokens");
        modelBuilder.Entity<IdentityUserClaim<int>>().ToTable("UserClaims");
        modelBuilder.Entity<IdentityUserRole<int>>().ToTable("UserRoles");
        modelBuilder.Entity<IdentityRoleClaim<int>>().ToTable("RoleClaims");
        modelBuilder.Entity<Role>().ToTable("Roles");

    }
}

public TestContext(DbContextOptions<TestContext> options)
    : base(options)
{
}

public virtual DbSet<Administrator> Administrators { get; set; }
public virtual DbSet<AppUser> AppUsers { get; set; }
public virtual DbSet<Basket> Baskets { get; set; }
public virtual DbSet<Building> Buildings { get; set; }
public virtual DbSet<Client> Clients { get; set; }
public virtual DbSet<Feedback> Feedbacks { get; set; }

// ... And other generated code.