Ready to have some fun… Today I spent the day investigating WCF FaulContracts and FaultException and some best practices for argument validation.  I’m going to do the same in a future post on Workflow Services but I felt it best to really understand the topic from a WCF point of view first. Investigation Questions What happens when a service throws an exception? What happens if a service throws a FaultException? What happens if the service operation includes a FaultContract and it throws a FaultException<TDetail>...

This morning I’ve been working on how to support cancelling a workflow via a CancellationToken.  The details of that are not important right now but what is really cool is how I was able to test this. Scenario: Caller requests Cancellation via a CancellationToken and the UnhandledExceptionAction is Cancel Given An activity that contains a CancellationScope The CancellationScope body has an activity that will create a bookmark and go idle The CancellationScope has a CancelHandler with a WriteLine...

Ken Levy recently interviewed me for CodeCast on the state of Windows Workflow Foundation 4 and the AppFabric for hosting your workflow services. Its episode 99, I wonder what they are planning for episode 100. You can download the episode here or through iTunes.   Enjoy! www.TheProblemSolver.nl Wiki.WindowsWorkflowFoundation.eu Blog Post by: Maurice

With the work I’ve been doing on versioning I’ve had to write unit tests that verify the behavior I expect from the helper classes in Microsoft.Activities.dll .  If you want to verify that your assembly versioning strategy is working correctly you may have to do similar testing.  This sort of testing is tricky… in this post I’ll share with you my solutions to some tough problems. Test Problem: Multiple Versions of the Same Assembly in a Test Run There is only one deployment directory for...

Een nieuw jaar betekent, zoals gebruikelijk, weer nieuwe plannen. En voor de DotNed gebruikersgroep is een van deze nieuwe plannen om een podcast te gaan maken en publiceren. Deze DotNed Podcasts worden speciaal voor de Nederlandse .NET ontwikkelaar gemaakt en zullen dan ook zo veel mogelijk Nederlandstalig zijn. Het is de bedoeling dat de onderwerpen die we gaan behandelen heel divers zijn, zolang het maar interessant en relevant is voor een .NET ontwikkelaar. De eerste van deze serie podcasts staat...