.net2.0 TransactionScope petshop

研究M$的petshop4.0代码时发现了TransactionScope。
它可以控制多个操作在同一个事务内完成。这对于把事务放在业务逻辑层的人来说确实很方便。
petshop代码：
BLL层下的OrderSynchronous.cs。

using System.Transactions;
//
  public void Insert(PetShop.Model.OrderInfo order) {
                        
            using (TransactionScope ts = new TransactionScope(TransactionScopeOption.Required)) {

                dal.Insert(order);

                // Update the inventory to reflect the current inventory after the order submission
                Inventory inventory = new Inventory();
                inventory.TakeStock(order.LineItems);

                // Calling Complete commits the transaction.
                // Excluding this call by the end of TransactionScope's scope will rollback the transaction
                ts.Complete();
            }
        }

using(TransactionScope ts = new TransactionScope(TransactionScopeOption.Required))
{
    //...
    ts.Complete();
}