Entity Framework - Inheritance with .Include?

Question

I think that there\'s a similar post on here about this but not exactly the same...

I have two entities in my EF model - let\'s call them Person and Developer, with

Answer 1

How about this:

var results = from developer in ctx.Employee.OfType()
              select new {developer, Qualifications = developer.Qualifications};

To things are interesting here:

1. we are excluding employees that aren't Developers
2. we are then projecting their Qualifications, and as a side effect of that projection, something called fixup with fill each developer.Qualifications too. I.e. this is another way of achieve the same effect as Include().

if you subsequently do this:

var developers = from anon in developers.AsEnumerable()
                 select anon.Developer;

You will get just developers, and they will have their Qualifications loaded too.

See Tip 1 for more info on why this works

Hope this helps

Alex