Is it possible to get Entity Framework to recognize objects that have been created and not yet saved in database?

Add the created and unsaved objects to a List o.GetType() == typeof(Object1Type) && o => o.Name. Contains("hello")) .FirstOrDefault() the docs.

Add the created and unsaved objects to a List then filter that list with linq like you did above. EDIT: actually, I stand corrected. It looks like you can specify merge options on the ObjectContext.TestDBEntities.

ObjectStateManager. GetObjectStateEntries(EntityState. Added) .

Where(o => o.GetType() == typeof(Object1Type) && o => o.Name. Contains("hello")) .FirstOrDefault(); the docs.

– stirfry Jun 19 at 2:08 @david : your thing does work so it's good to at least know there is a solution. I still think it's a little cumbersome. I found another question (stackoverflow.

Com/questions/815586/…) which I might try to implement, although I'm not sure how out of date it is as the SaveChanges overload it uses has been deprecated. – stirfry Jun 19 at 2:35 @stickman: you can always override SaveChanges and handle it however you like. Also, feel free to give me some credit if the answer is correct :)!

– David Wick Jun 19 at 2:39 @David : Yeah I'm new to EF so I didn't realize there was SaveChanges and AcceptAllChanges so I'm figuring out what the difference is. Looks like there is a way to have some sort of SQL Transaction type thing. – stirfry Jun 19 at 2:46 Its NOT a transaction - all regular queries hit the database, and ignore local changes, however, EF4.1 provides an easy way to query those local changes - (and EF4.0 provides a more complicated one) – Andiih Jun 19 at 11:03.

I'm a bit late here... @DavidWicks answer doesn't tell the whole story! The context does provide a mechanism to query - and it got a lot easier in EF4.1 than 4.0 In 4.1 take a look at msdn.microsoft.com/en-us/library/gg69624...).aspx the dbSet. Local property holds all of the local changes for objects (that have not been deleted) in the context, so querying against that is all you need!

1 I wish they would hurry up and finish/improve the docs for 4.1; so hard to find relevant info. – David Wick Jun 19 at 11:09 this is probably a stupid question, I just installed EF4.1 - how do I use this Local property? My "TestDBEntities" class is an ObjectContext where the Local property seems to exist in the DbSet class.

Please note, I generated the domain model from the database. – stirfry Jun 19 at 13:40 blogs.msdn. Com/b/adonet/archive/2010/12/06/… - Really should've read a book about this before just leaping right into EF4.So you have to generate an EDMX file and then you got to generate another file if you want it in a DbContext?

Why didn't they just include the whole thing in one step? – stirfry Jun 19 at 13:51 Books - checkout Programming Entity Framework by Julia Lerman. The 2nd Edition is EF4 (not 4.1) – Andiih Jun 19 at 17:41 Re @stickmans one step question - think of the EDMX as an engine+API.

The DbContext is kindof an 3rd party add-on written against the API, if you don't want it, don't use it, if a different one better meets your needs, use that etc... – Andiih 10/12/068 at 11:53.

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