Question

What is the best way to know whether my code first entity is from direct code (new DataObject())

or from context (Context.DataObjects.First())

Since i am not preventing my context from using dynamicproxies, i can do that :

    protected DataObject()
    {
        if (this.GetType().Namespace != "System.Data.Entity.DynamicProxies")
        {
            this.Id = IdGenerator.NextId<DataObject>();
        }
    }

but this look like a bad solution, since GetType() is expensive.

Thank you

Answer 1

If you want to check the type of the entity you must call GetType. Btw. there is recommended solution directly on MSDN. To get ObjectContext instance from DbContext you can use:

ObjectContext objectContext = ((IObjectContextAdapter)dbContext).ObjectContext;