Comparing Transactions in COM+ and ServiceModel

This topic discusses how to simulate the behavior of a transactional COM+ service using the Windows Communication Foundation (WCF) attributes the System.ServiceModel namespace provides.

Emulating COM+ Using ServiceModel Attributes

The following table compares the TransactionOption enumeration used to create an EnterpriseServices transaction and how they correlate to the WCF attributes the System.ServiceModel namespace provides.

COM+ attribute	WCF attributes
RequiresNew	TransactionFlowAttribute is set to NotAllowed. TransactionScopeRequired is true. The TransactionFlow attribute in the binding element is false.
Required	TransactionFlowAttribute is set to Allowed. TransactionScopeRequired is true. The TransactionFlow attribute in the binding element is true.
Supported	There is no direct equivalent. In general, you should adopt the behavior specified for Required instead.
NotSupported	TransactionScopeRequired is false. The TransactionFlow attribute in the binding element is false.
Disabled	There is no direct equivalent. In general, you should adopt the behavior specified for NotSupported instead.