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.
- Enable the TransactionFlow=true in binding configuration
- Set TransactionFlowOption.Allowed in the operation contract
- Set TransactionScopeRequired=true in the operation contract
Client transaction mode:
This settings ensures the service uses only the client’s transaction
- Enable the TransactionFlow=true in binding configuration
- Set TransactionFlowOption.Mandatory in the operation contract
- 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.
- Disable the TransactionFlow=false in binding configuration
- Set TransactionFlowOption.NotAllowed in the operation contract
- Set TransactionScopeRequired=true in the operation contract
None transaction mode:
This setting ensures service does not use transaction
- Disable the TransactionFlow=false in binding configuration
- Set TransactionFlowOption.NotAllowed in the operation contract
- 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 |
Tips!
- Always create the service with Interface->Implementation format, mention the contract in Interface.
- Define the service in Class library and refer the class library in Host project. Don’t use service class in host project.
- Change the instance mode to per call as default.
- Always catch exception using try/catch block and throw exception using FaultException < T >.
- Logging and Include exception should be enable while compiling the project in debug mode. While in production deployment disable the logging and Include exception details.