Entity Framework 4.1 adds a GUID to entity object returned from DB

Question

I have a strange problem when using Entity Framework code first.

When I return an object with dbContext.Users.Where... I don't get the User defined in my model, but User_{GUID}.

Is there anyone who knows this phenomenon and can help?

Regards, Ajit

Read about [EF's concept of dynamic proxies](http://www.develop.com/entityframework4) - it does this to be able to track changes. [You can turn it off, if you want to](http://stackoverflow.com/questions/7111109/should-i-enable-or-disable-dynamic-proxies-with-entity-framework-4-1-and-mvc3) — marc_s, Feb 10 '12 at 14:30

Maxim V. Pavlov · Accepted Answer · 2012-02-10T15:08:39.447

1

If your dbContext.Users if of a type DbSet<User> then you would get a User-castable type instance if you query Users collection.

User_{GUID} looks like a dynamic proxy object to a User instance in your DbContext. Treat it as if it was a User instance.

edited Feb 10 '12 at 15:08

answered Feb 10 '12 at 14:34

Maxim V. Pavlov

1 Answers1