Am I using TransactionScope and DataContext properly?
===

What if I new up some DataContexts, read some data, and then only wrap the SubmitChanges in a TransactionScope?

    string conn1 = GetConn1();
    string conn2 = GetConn2();
    using (DataContext1 dc1 = new DataContext1(conn1))
    {
      List<Customer> customers = ReadSomeData(dc1);
      ModifySomeCustomers(customers);  //performs local modification to Customer instances

      using (DataContext2 dc2 = new DataContext2(conn2))
      {
        List<Order> orders = ReadSomeData(dc2);
        ModifySomeOrders(orders); //performs local modification to Order instances
    
        using (TransactionScope scope = new TransactionScope())
        {
          dc1.SubmitChanges();
          dc2.SubmitChanges();
          scope.Complete();
        }
      }
    }

The first SubmitChanges call is expected to fetch a connection from the pool and enlist that connection in the scope.
MS DTC is enabled  - the second SubmitChanges call is expected to promote the transaction to "distributed", fetch a connection from the pool and enlist that connection in the scope.

I'm concerned that ReadSomeData may have left the connection open, so SubmitChanges doesn't fetch a  connection from the pool, and therefore doesn't enlist the connection in the scope.
