Question

I have been reading SO posts about EF Code First generating duplicate foreign keys and tried to apply the solution to my code but unable to fix my code.

Here are my classes

 public class Schedule
{
    public int Id { get; set; }
    public ICollection<Appointment> Appointments { get; set; }
}

public class Appointment
{
    public int Id { get; set; }
    public Schedule Schedule { get; set; }
}

public class ScheduleConfiguration : EntityTypeConfiguration<Schedule>
{
    public ScheduleConfiguration()
    {
        HasKey(s => s.Id);
        Property(s => s.Id).HasColumnName("SCHEDULEID");            
        ToTable("SCHEDULES");
    }        
}

public class AppointmentConfiguration : EntityTypeConfiguration<Appointment>
{
    public AppointmentConfiguration()
    {
        HasKey(a => a.Id);
        Property(a => a.Id).HasColumnName("APPOINTMENTID");            
        HasRequired(a => a.Schedule).WithMany().Map(x => x.MapKey("SCHEDULEID"));
        ToTable("APPOINTMENTS");
    }
}

This is generating two foreign keys in appointments table namely SCHEDULEID and Schedule_Id1.

How can I tell EF not to create Schedule_Id1

Answer 1

Just try this :

HasRequired(a => a.Schedule).WithMany(x=> x.Appointment).Map(x => x.MapKey("SCHEDULEID"));

Hope this help.