Transactions in WCF Service

A. Changes in WCF service to support Transactions

Step 1:

Create a method in Interface and add transaction attribute “[TransactionFlow(TransactionFlowOption.Allowed)]” on it.

[OperationContract]

[TransactionFlow(TransactionFlowOption.Allowed)]

void InsertEmployee(employee emp);

Step 2:

In service class add operation behaviour on method to enable transaction

[OperationBehavior(TransactionScopeRequired=true)]

public void InsertEmployee(employee emp)

{

}

Step 3:

In Service app config, add wsHHTPBinding end point

<endpoint address ="http://localhost:8731/Design_Time_Addresses/WcfServiceLibrary1/Service1/" binding="wsHttpBinding" bindingConfiguration="TransactionalBind" contract="WcfServiceLibrary1.IService1">

Step 4:

Create binding configuration and add its name in endpoints under “binding configuration” property

<bindings>

      <wsHttpBinding>

        <binding name="TransactionalBind" transactionFlow="true"></binding>

      </wsHttpBinding>

</bindings>

B. Changes while consuming WCF service in Web Application:

Step 1:

Consume the WCF service by adding reference

Step 2:

Add transaction scope in method

        using (TransactionScope a = new TransactionScope(TransactionScopeOption.RequiresNew))

        {

            try

            {

                obj.InsertEmployee(new ServiceReference1.employee());

                //throw new Exception();

                a.Complete();

            }

            catch

            {

                a.Dispose();

            }

        }

       Transaction will complete when complete method will call in transaction scope.In case of any exception it’ll rollback the transaction done.