在 one2one 关系中双向导航

Question

I am using AspNetIdentity and with that the generated model for AspNetUser. I have created my own AspNetUser class like so:

 public class MieterverwaltungUser : IdentityUser<int>
{
    public override int Id { get; set; }

    [NotMapped]
    public TenantData TenantData { get; set; }
}

The TenantData is not mapped because I don't want it to be shown in the table and only use it for navigation purposes in my code. TenantData however has a reference to it:

 public class TenantData
{
    public int Id { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public DateTime DateOfBirth { get; set; }
    public string Nationality { get; set; }
    public Gender Gender { get; set; }
    public Job Job { get; set; }

    public MieterverwaltungUser MieterverwaltungUser { get; set; }
}

Now I am trying to select a User and include the TenantData like so:

var user = await _mieterverwaltungContext.Users.Include(x => x.TenantData).SingleOrDefaultAsync(x => x.NormalizedEmail == email.ToUpper());

But I am getting an error:

System.InvalidOperationException: Lambda expression used inside Include is not valid.

Thanks in advance!

Answer 1

Fixed it by removing the [NotMapped] Annotation and adding

public int MieterverwaltungUserId { get; set; }

in TenantData , so that EFC knows where to put the foreign key. Now I can use the code above without problems.