Question

Here’s my scenario: I need to make three or four calls to different WCF services before completing the transaction – what are my options, if any?

ServiceA.SaveWork(work1);
ServiceB.SaveWork(work2);
ServiceC.SaveWork(work3);
ServiceD.SendNotification(notification);

If one call fails, all fail… Note that these services may not be in the same domain.

Cheers!

Answer 1

You should be able to wrap those into a System.Transctions.TransactionScope to achieve this:

using(TransactionScope scope = new TransactionScope())
{
   ServiceA.SaveWork(work1);
   ServiceB.SaveWork(work2);
   ServiceC.SaveWork(work3);
   ServiceD.SendNotification(notification);

   scope.Complete();
}

Of course, you need to make sure your WCF services don’t explicitly prevent being part of a transaction! (check out the TransactionFlow attribute – avoid the TransactionFlow.NotAllowed setting!)