Simplify transaction handling samples about ef6 HOT 3 CLOSED

 using (var OuterTransactionScope = new TransactionScope())
            {
                using (DbContext = new DbContext())
                {
                    foreach (var x in list) // assume this will be executed twice 
                    {
                        try
                        {
                            var innerTransaction = DbContext.Database.BeginTransaction(isolationLevel);
                            DbContext.SaveChanges(); //Add row
                            DbContext.SaveChanges(); //Add row
                            innerTransaction.Commit();
                        }
                        catch (Exception ex)
                        {
                            innerTransaction.Rollback();
                        }
                    }
                    //Expecting to find two rows here but Actually no data get added
                }