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I have just updated the SQL Server Compact Workflow Persistence Service to better handle deserialization issues when loading a workflow. The service now makes sure the WorkflowRuntime ServicesExceptionNotHandled is raised, something it should have done...
In a previous blog post I demonstrated how TypeMock allowed us to mock out the workflow runtime infrastructure and create true unit tests for a workflow activity. Now this may not seems like a big deal but because most of the classes in the workflow runtime...
Using an ActivityDesignerTheme is a quick way to customize the appearance of an activity in the workflow designer. But there is a gotcha Because once you applied the theme and have a workflow with the custom activity open in the designer no matter what...
When working with state machine workflow's the SetStateActivity is one of the more important activities to use. The main reason is that is the one used to transition from one state to another. You can actually transition state in a different way as...
As I mentioned in my previous blog post adding a custom ActivityValidator class to an activity validates it at runtime as well as at design time. So when is this runtime validation done and what happens when it fails? The when part is when the WorkflowInstance...
VS2008 SP1 Beta is quite a package. By default the installation downloads the packages as needed and when needed. Now that is just fine if you only need to install a single machine. But when you need to install multiple, possibly virtual, machines like...
The Dutch Microsoft office has posted the first of the Community DevCast we recorded. The host is Alex Thissen who actually does most of the work as he also edits the screencasts so don't forget to thank him next week when you run into him at the...
By default every custom workflow activity shows the same icon. And using an icon that help understand what the activity actually does makes life so much easier for the user of your activity. And remember he is a developer so some day he might just return...
For some reason a lot of people seem to think that only a single WorkflowRuntime object can be created in an AppDomain. And it isn't just the average Joe out there who seems to think so, no even book authors describe this behavior as the Workflow...
The ReplicatorActivity is one of the more interesting Workflow Foundation activities to work with when you have a collection of data and want to iterate over each item. Basically just think of it as a For Each statement in regular code. To demonstrate...
Visual Studio visualizers are pretty cool and can help you quite a bit when debugging but you need to develop them and that just ads to the workload. So how about having someone else do it? Well Microsoft added a few visualizers to VS2008 and VS2008 but...
Sometimes you can get these kinds of errors using the new Workflow Foundation ReceiveActivity when property binding the incoming value. So why does this happen Well it appears the validation is comparing the type of the original interface to to the type...
I just noticed the second part of my article about developing custom Windows Workflow Foundation activities. Read part 2 here . Just in case you missed part 1 you can find it here . Enjoy! www.TheProblemSolver.nl http://wiki.WindowsWorkflowFoundation...
The new ReceiveActivity and SendActivity that marry Windows Workflow Foundation (WF) and Windows Communication Foundation (WCF) are really cool . Getting started is easy because a new Sequential Workflow Service Library, found under WCF instead of Workflow...
The first of a two part article I wrote on developing custom workflow activities just appeared on the MSDN Visual Basic Developer Center . You can find the article named "The Power of Custom Workflow Activities" here . A second article with...
I am proud to announce that I have been added to the European INETA Speakers Bureau I am really passionate about Workflow Foundation and like to speak about that as well as other .NET and architecture related subjects. So if you are a user group leader...
Next march 28 we are hosting another SDE event in Ede, the Netherlands. There is an impressive list of speakers and sessions, check it out here . I will be doing a session about the new Workflow Foundation features in the .NET framework 3.5. These new...
On May 3 rd GAMTUG , the Galway Area Microsoft Technology Users Group, is organizing the DDD Ireland and I will be there doing a session on Workflow Foundation in a SOA architecture and a seconds session about using the new VSTO version 3 features that...
Looking for more information about VS2008 and .NET 3.5? I suspect you might just be as there is a ton of new functionality and with the pace of everything coming out it isn't likely that you know it all To help learn the new stuff Microsoft has put...
Using a ReceiveActivity is a great way of exposing a workflow via a WCF proxy. Get started by creating a new project based upon "Sequential Workflow Service Library". This is found in the WCF projects node instead of the Worflow projects node...
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