Question

(Note: I see this, but it’s not exactly what I want to do.)

I have a requirement where I need to do the following:

1. Create a new Foo entity
2. Upon creation of a Foo entity, create a new FooAudit entity and use the new identity value from the new Foo entity in the text description. FooAudit has no reltionship with Foo, so the identity must be pulled manually from the creation of Foo.
3. Do these things in an all-or-nothing transaction, keeping the EntityState of the Foo record (Added) if I do not commit the transaction.

Do I use another context like so?

using (var fooContext = GetContext())
{

    fooContext.Foos.AddObject(new Foo());

    using (var transaction = new TransactionScope())
    {

        // Save Foo, while maintaining the Changed EntityState until AcceptAllChanges
        fooContext.SaveChanges(SaveOptions.DetectChangesBeforeSave);

        using (var auditContext = GetContext())
        {
            // Save FooAudit, maintaining the Changed EntityState until AcceptAllChanges
            auditContext.FooAudits.AddObject(new FooAudit());
            auditContext.SaveChanges(SaveOptions.DetectChangesBeforeSave);
            transaction.Complete();
            fooContext.AcceptAllChanges();
            auditContext.AcceptAllChanges();
        }
    }
}

Or is there a better way?

Answer 1

I solved this by using another context as illustrated.