Is it possible to prevent EntityFramework 4 from overwriting customized properties?

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A different approach is to hook into the ObjectMaterialized event in the DbContext and set the kind there.

In my DbContext constructor, i do this:

    ((IObjectContextAdapter)this).ObjectContext.ObjectMaterialized += new ObjectMaterializedEventHandler(ObjectMaterialized);

and then the method looks like this:

private void ObjectMaterialized(object sender, ObjectMaterializedEventArgs e)
        {
            Person person = e.Entity as Person;
            if (person != null) // the entity retrieved was a Person
            {
                if (person.BirthDate.HasValue)
                {
                    person.BirthDate = DateTime.SpecifyKind(person.BirthDate.Value, DateTimeKind.Utc);
                }
                person.LastUpdatedDate = DateTime.SpecifyKind(person.LastUpdatedDate, DateTimeKind.Utc);
                person.EnteredDate = DateTime.SpecifyKind(person.EnteredDate, DateTimeKind.Utc);
            }
        }

The downside is that you need to make sure you set it for each property that you care about but at least it gets set at the lowest possible level.

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