System.Transactions.TransactionStatePromotedBase.EnlistDurable C# (CSharp) Method

        internal override Enlistment EnlistDurable(
            InternalTransaction tx,
            Guid resourceManagerIdentifier,
            IEnlistmentNotification enlistmentNotification,
            EnlistmentOptions enlistmentOptions,
            Transaction atomicTransaction
            )
        {
            Debug.Assert(tx.PromotedTransaction != null, "Promoted state not valid for transaction.");

            tx.ThrowIfPromoterTypeIsNotMSDTC();

            // Don't hold locks while calling into the promoted tx
            Monitor.Exit(tx);
            try
            {
                Enlistment en = new Enlistment(
                    resourceManagerIdentifier,
                    tx,
                    enlistmentNotification,
                    null,
                    atomicTransaction
                    );
                EnlistmentState.EnlistmentStatePromoted.EnterState(en.InternalEnlistment);

                en.InternalEnlistment.PromotedEnlistment =
                    tx.PromotedTransaction.EnlistDurable(
                        resourceManagerIdentifier,
                        (DurableInternalEnlistment)en.InternalEnlistment,
                        false,
                        enlistmentOptions
                        );
                return en;
            }
            finally
            {
                Monitor.Enter(tx);
            }
        }