Data Conflict in LINQ

Question

When making changes using SubmitChanges(), LINQ sometimes dies with a ChangeConflictException exception with the error message Row not found

Answer 1

I've gotten this error in a circumstance completely unrelated to what the error message describes.

What I did was load a LINQ object via one DataContext, and then tried to SubmitChanges() for the object via a different DataContext - gave this exact same error.

What I had to do was call DataContext.Table.Attach(myOldObject), and then call SubmitChanges(), worked like a charm.

Worth a look, especially if you're of the opinion that there really shouldn't be any conflicts at all.