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单选题
You are integrating a Windows Communication Foundation (WCF) service within an enterprise-wide Service Oriented Architecture (SOA).Your service has the following service contract: [ServiceContract]public class CreditCardConfirmationService { [OperationContract] boolean ConfirmCreditCard(string ccNumber); double OrderAmount(int orderNumber);} You need to allow the code in the ConfirmCreditCard method to participate automatically in existing transactions.If there is no existing transaction, a new transaction must be created automatically. What should you do?()
A

Inside the ConfirmCreditCard method, surround the code that must participate in the transaction with a using(new TransactionScope()) block.

B

Inside the ConfirmCreditCard method, surround the code that must participate in the transaction with a using(new CommittableTransaction()) block.

C

Add an [OperationBehavior(TransactionScopeRequired=true)] attribute to the ConfirmCreditCard method.

D

Add an [OperationBehavior(TransactionAutoComplete=true)] attribute to the ConfirmCreditCard method.


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更多 “单选题You are integrating a Windows Communication Foundation (WCF) service within an enterprise-wide Service Oriented Architecture (SOA).Your service has the following service contract: [ServiceContract]public class CreditCardConfirmationService { [OperationContract] boolean ConfirmCreditCard(string ccNumber); double OrderAmount(int orderNumber);} You need to allow the code in the ConfirmCreditCard method to participate automatically in existing transactions.If there is no existing transaction, a new transaction must be created automatically. What should you do?()A Inside the ConfirmCreditCard method, surround the code that must participate in the transaction with a using(new TransactionScope()) block.B Inside the ConfirmCreditCard method, surround the code that must participate in the transaction with a using(new CommittableTransaction()) block.C Add an [OperationBehavior(TransactionScopeRequired=true)] attribute to the ConfirmCreditCard method.D Add an [OperationBehavior(TransactionAutoComplete=true)] attribute to the ConfirmCreditCard method.” 相关考题
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