ASP Identity table column change but mapping is not possible with new column name

Question

I have changed the asp Identity so that in database Id column of AspNetIdentity table be UserId:

modelBuilder.Entity

        

Answer 1

Define your relationship with the fluent API like this:

modelBuilder.Entity<JobApply>()
                    .HasRequired(e => e.ApplicationUser)
                    .WithMany(e => e.JobApplies)
                    .HasForeignKey(e => e.UserId);

You may as well remove the property UserId from the ApplicationUser class and then define the mapping like this:

modelBuilder.Entity<JobApply>()
                    .HasRequired(e => e.ApplicationUser)
                    .WithMany(e => e.JobApplies)
                    .Map(m => m.MapKey("UserId"));