Transaction Mode

This article explains about the how to configure the service and client transaction mode in WCF service.

• Client transaction – Transaction setting propagated or initiated from the client side
• Server transaction – Transaction setting propagated or initiated from server side

Client/Server transaction mode:

    This setting ensures that service uses the client’s transaction if possible or a server side transaction when the client does not have a transaction.

1. Enable the TransactionFlow=true in binding configuration
2. Set TransactionFlowOption.Allowed in the operation contract
3. Set TransactionScopeRequired=true in the operation contract

Client transaction mode:

    This settings ensures the service uses only the client’s transaction

1. Enable the TransactionFlow=true in binding configuration
2. Set TransactionFlowOption. Mandatory in the operation contract
3. Set TransactionScopeRequired=true in the operation contract

Service transaction mode:

    This seeing ensures that the service always has a transaction, separated from any transaction its client may or may not have.

1. Disable the TransactionFlow=false in binding configuration
2. Set TransactionFlowOption. NotAllowed in the operation contract
3. Set TransactionScopeRequired=true in the operation contract

None transaction mode:

    This setting ensures service does not use transaction

1. Disable the TransactionFlow=false in binding configuration
2. Set TransactionFlowOption. NotAllowed in the operation contract
3. Set TransactionScopeRequired=false in the operation contract 

Below table explains about the Transaction mode activation based on the binging, contract and behavior settings

Binding Transaction flow	TransactionFlowOption	TransactionScopeRequired	Transaction mode
False	Allowed	False	None
False	Allowed	True	Service
False	NotAllowed	False	None
False	Allowed	True	Service
True	Allowed	False	None
True	Allowed	True	Client/Service
True	Mandatory	False	None
True	Mandatory	True	Client