EF AddOrUpdate not updating foreign key objects

I have an entity Holding which has a reference to another entity Instrument:

    public class Holding     {         public virtual Instrument Instrument { get; set; }     } 

I configure the relationship using EF 6.1.3 as follows. Instrument has no reference/navigation property to Holding:

        modelBuilder.Entity<Holding>().Property(h => h.Code).IsRequired();         modelBuilder.Entity<Holding>().Property(h => h.MarketValue).IsRequired();         modelBuilder.Entity<Holding>().HasRequired(h => h.Instrument); 

I'm having an issue where context.Holdings.AddOrUpdate(p => p.Code, holding); does not update the instrument on the holding record. If I change a different property, like MarketValue, MarketValue is updated, never Instrument though. If I add a holding, the Instrument is referenced correctly. It's just the update that isn't working as expected.

What am I missing?

0 Answers

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