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All Tags » DevCenter » Workflow (RSS)
Workflow 4 and Visual Basic expressions Survey
The topic of Visual Basic expression in Windows Workflow Foundation 4 seems to be a bit of an item for some people as you can see in the comments to my blog posts about it here . Now personally I don’t think it is such a big deal as it only concerns the...

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Online presentation: Meet the New Workflow WF4
Tomorrow I will be doing an online presentation about Windows Workflow Foundation 4. The meeting lasts 1 hour and starts at 4PM European time, 3PM UTC or 7AM PST. The goal is to provide an overview of WF4 and how to get started with it in Visual Studio...

Posted by Maurice | with no comments

WF4&WCF and message correlation
Note: This blog post is written using the .NET framework 4.0 Beta 2 In the previous blog posts, here , here and here , I demonstrated how to  use WCF from WF4. This same some more about sending multiple messages to the same workflow, AKA Workflow...

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Sending your own objects to a WF4 workflow
In the previous two blog posts ( here and here ) I showed how to create and expose a Windows Workflow Foundation 4 workflow via WCF and have both a workflow and a regular C# client work with it. But the parameter and return value where real simple with...

Posted by Maurice | 6 comment(s)

Combined DevelopMentor instructors blog feed.
Michael Kennedy , one of the co instructors from DevelopMentor , has created a combined feed from all the blogs of the various DevelopMentor. An awesome group of people with a lot of knowledge to share. Highly recommended in you RSS reader. http://feeds...

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What does Windows Workflow Foundation 4 mean for existing workflow developers?
  The question of what Windows Workflow Foundation version 4 means for developers currently developing using WF recently came up. As I mentioned before WF 4 is a complete rewrite and doesn’t use any of the existing WF 3 classes. The design of WF...

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Passing data into a Windows Workflow Foundation 4 workflow
Passing parameters into a workflow is similar in WF4 as it was in WF3. In both case a Dictionary<string, object> is passed in when creating the workflow instance object. Alternatively when using the WF4 WorkflowInvoker you can pass it into the Invoke...

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The new Windows Workflow Foundation 4 runtime
With WF3 there was a central workflow runtime environment called the WorkflowRuntime and used to manage the lifetime of workflow instances. In WF4 this central class no longer exists and we manage individual workflows. To compare the two, this is what...

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Getting started with Windows Workflow Foundation 4
As you may have heard Windows Workflow Foundation 4 is not an upgrade from Windows Workflow Foundation 3 (or 3.5). The version numbers might suggest that the previous version was quite mature but in fact it refers to the version of the .NET framework...

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Using a TransactionScopeActivity with a WCF ReceiveActivity revisited
Last year Marcel and I worked on a problem using a TransactionScopeActivity inside a WCF ReceiveActivity. I blogged a number of time about our finding, for example here . Last week I heard from Marcel that a hotfix was finally available that solves this...

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Looking back at the MVP Summit
Last week lots of MVP, myself included, where in Redmond visiting Microsoft on our yearly MVP pilgrimage. The MVP Summit is always a great event. Not only do we get to talk to the MS team members who actually design and build all the software we love...

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Unit testing and Windows Workflow Foundation
A while a go I wrote some posts about unit testing Windows Workflow foundation Activities, you can find the posts here and here . Fortunately I am not the only one who thinks unit testing is important as you can find various other blog posts about it...

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Updated SQL Server Compact Workflow Persistence Service
Yesterday I uploaded a new version of the SQL Server Compact Workflow Persistence Service to code.msdn.com. No major changes this time just two new features to get it more in line with the standard SqlWorkflowPersistenceService. I added a GetAllWorkflows...

Posted by Maurice | 3 comment(s)

Goodbye XOML, hello XAMLX
In the next version of workflow we are going to leave the XOML extension behind us. Creating workflow's or custom activities using markup will create a XAML file instead of the now familiar XOML file. That doesn't mean we are moving to exactly...

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Fun at the PDC
The PDC wasn't all hard work, we sure had some fun too . As always there where a number of product group dinners. This year the C#, VB and F# product groups joined up and had a dinner together. I am at the right bottom, check Anders sitting at the...

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PDC session download
Want to download and watch all PDC content? Then there are a couple of ways to get at them. The official way if to go through the session agenda at the conference site. See https://sessions.microsoftpdc.com/public/timeline.aspx . You see all sessions...

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Hot from the PDC: Windows Azure
Windows Azure is the Microsoft awnser to the Google App Engine and Amazon EC2. Basically it is a platform in the cloud for developing web applications. It isn't just about hosting ASP.NET applications but also about services like SQL Server and SharePoint...

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Using collections of custom objects in a workflow
Last week during my Chalk & Talk session at the SDC one of the attendees was having problems with workflow persistence and collections of custom objects. Now I never got to see his code so I am not sure what the problem was but maybe this simple sample...

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Versioning long running workflows part 4
Part 1 Part 2 Part 3 Part 4 In the previous blog posts we made sure we could have multiple versions of the same workflow running side by side. This ability is one of the more powerful concepts of WF and a real must have for long running business applications...

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A bit more about using TransactionScopeActivity within a ReceiveActivity
Part 1 part 2 Part 3 Part 4 You may recall my previous posts about using the TransactionScopeActivity within a ReceiveActivity and all the nasty issues we ran into. Just in case you want to read them again: one , two and three . As it turn out this is...

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