Question

I have this e.g. code:

    var list = (from item in db.Table
        select item).ToList();

[do processing where I modify,add,remove items to the list with a DX GridControl]
[Ensure inserted items]
[I can see that item(s) are not in the list]

db.SubmitChanges();

Changes not reflecting the DataBase for removed items.
What is wrong?

Answer 1

You cannot modify the list in order to update the database. You have to modify the database entity collections. For example: db.Table.Remove(instance)

Edit: I believe the above syntax is EF4 only. For the original EF, you need to use DeleteOnSubmit, which is a method on your entity container.