尝试以1：1关系使用Entity Framework保存子对象时出错（C＃）

Question

I'm using Visual Studio 2017 and Entity Framework 6 with SQL Server 2016, I have a problem when I try to save a child object.

[Authorize]
public ActionResult Agregar(Pacientes oPaciente)
{
    if (oPaciente.Nombre != null)
    {
        using (var oModel = new pamidbEntities())
        {
            var o_new_pac = new Pacientes();
            o_new_pac.Apellido = oPaciente.Apellido;
            o_new_pac.Nombre = oPaciente.Nombre;
            o_new_pac.DNI = oPaciente.DNI;
            o_new_pac.NroAfiliado = oPaciente.NroAfiliado;
            o_new_pac.Sexo = oPaciente.Sexo;
            o_new_pac.Correo = oPaciente.Correo;
            o_new_pac.FechaNacimiento = oPaciente.FechaNacimiento;
            o_new_pac.Descripcion = oPaciente.Descripcion;

            oModel.Pacientes.Add(o_new_pac);
            oModel.SaveChanges();

            o_new_pac.Anannesis = oPaciente.Anannesis;
            oModel.Anannesis.Add(o_new_pac.Anannesis);
            oModel.SaveChanges();

            return RedirectToAction("Index", "Pacientes");
        }
    }

    return View();
}

The first object o_new_pac , it is saved ok, but I get this error when try to save o_new_pac.Anannesis :

InnerException: A dependent property in a ReferentialConstraint is mapped to a store-generated column. Column: 'Id'."

System.Exception> {System.InvalidOperationException}

Between these two objects I have a 1:1 relation.

The way it is related is the following:

I don't know if I'm saving the object incorrectly or my be data base design is wrong.

Answer 1

I could solve the problem. In the chield Anannesis, it had the PK as identity auto-generated, how they say in link A dependent property in a ReferentialConstraint is mapped to a store-generated column error on 1-to-1 relationship , the problem is when entity framework try to save the chield and put an Id.

My unique solution was take out the PK as identity.