tempuri.org is the default namespace applied to WCF Services and Workflow Services.  You can and should specify your service namespace. It is recommended that you explicitly specify a name and namespace for the service contract, and an action for each operation to avoid using " http://tempuri...

Humans Go to Control Panel / Programs / Programs and Features / View Installed Updates Use the Search Box to search the updates for KB2495593 KB2478063 Or if you prefer, search the list your self Microsoft .NET Framework 4 Platform Update 1 - Runtime Update Look for ...

The Microsoft .NET Framework 4 Platform Update 1 released today, 4/18/2011. The Microsoft .NET Framework 4 Platform Update 1 is a platform update that is a set of new features that provides additional functionality for top customer requests and important scenarios. The features that are enabled...

Update: This went live 4/18/2011, and there are more details here: Microsoft .NET Framework 4 Platform Update 1 On March 25 th at his Tech-Ed India keynote Jason Zander announced some great new resources for developers. Our team has been working hard on these releases and I’m happy to share...

I don’t remember anyone ever actually asking me this, but I found myself wondering the question while rustling up a quick rehosting app. Foreach<> activity lets you change the TypeArgument dynamically via the property grid. But FlowSwitch<> doesn’t. Why? As usual, although it take a while...

Last year we at PDC10 we gave you a preview of the next release of Windows Workflow Foundation.  The video has just been posted to Channel 9. Windows Workflow Futures Speaker: Ron Jacobs Learn about the key investments we’re making in Windows Workflow Foundation (WF). See the WF improvements we...

Even when AsyncCodeActivity.Cancel is called, the activity will still execute the EndExecute method, so it isn't immediately obvious why a second path of execution is necessary. Implementing this method is useful only when AsyncCodeActivityContext.MarkCanceled is implemented, which in turn is useful...

To access environment information from within an activity, you'll need to use the System.Activities.Hosting.SymbolResolver class. Here's the code to access the symbol resolver from within an activity: public sealed class SymbolUser : CodeActivity { protected override void Execute(CodeActivityContext...

“The important point is that our test can’t control what that dependency returns to our code under test or how it behaves (if we wanted to simulate an exception, for example). That’s when we use stubs .” – The Art of Unit Testing - Roy Osherove, Yesterday morning I received an email from Ryo in Belgium...

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...

I couldn't leave this one alone. While I was making the last episode I said that there was possibly another strategy for detecting states and transitions and that was to use Tracking data. In this episode I'll show you a better way to implement our WPF UI using the Model View View-Model (MVVM) pattern...

Just posted a new release of Microsoft.Activities.UnitTesting This release incorporates the Task Parallel Library to greatly simplify test code. Episodes You can now create a task that will run an episode of work in the workflow. An episode is simply a pulse of work that the workflow runs. For...

Recently I saw a message on the WF4 Forum where someone was asking for help learning how to consume a WCF service from a Workflow. In this post I’m going to walk through how you can consume a WCF service from a Workflow where both the service and the workflow live in the same web site. This...

I’m happy to announce that we have just posted a “Labs” release on our http://wf.codeplex.com site with some new Caching Activities . These activities work with Windows Server AppFabric Caching making it possible for you to use the cache directly from your workflow ...

Here are some great resources to get you started. Intro the WF4 Hands On Lab Introduction to State Machine Hands On Lab Intro to Workflow Services / AppFabric Hands On Lab (Part of the Visual Studio 2010 Training Kit ) Check out the Contoso HR Workflow Services Sample endpoint.tv –...

Wondering what the big deal is about Workflow? Wondering how you can use it to support a long running process in a web application? Want to see how Windows Server AppFabric can help? In this episode I'll show you the Contoso HR sample application which demonstrates a Workflow Service that coordinates...

Greg Leake has been at it again. He has emerged from his lab with the latest results of benchmark testing of Windows Server AppFabric Caching vs. IBM eXtreme Scale and the results are something you definitely want to see. Microsoft ® Windows ® Server AppFabric vs. IBM ® WebSphere ®...

Suppose you want to create a workflow that needs to wait on a CLR event or callback. In this episode I'll show you how to create an Activity and a Workflow Extension that implements IWorkflowInstanceExtension to create an activity that can safely deal with CLR events. More Ron Jacobs Blog -...

Recently David K contacted me through my blog and shared with me a solution that he came up with for a particular problem that he was able to solve using IWorkflowInstanceExtension and said it would be great if I could do an endpoint.tv episode about it. David already solved his problem but he wanted...

When we asked you what you wanted to see on endpoint.tv , one of the top three most requested topics was How to Unit Test Workflows. On this episode, I'll show you how to test Simple activities using WorkflowInvoker Complex activities with bookmarks and WorkflowApplication WorkflowServices...

In this episode, we discuss the FlowChart activity. Sure, it looks simple—and in fact it is. Watch as Leon Welicki explains how you can use the new WF4 Flowchart activity to build workflows. The sample application shown is a part of the WF4 SDK Samples . Ron Jacobs blog http://blogs.msdn.com/rjacobs...

Recently I asked you to vote on topics you want to see on endpoint.tv . Coming in at #3 was this question on how to Unit Test WF4 Workflows. Because Workflows range from very simple activities to long and complex multi-step processes this can be a very challenging. I found after writing many activities...

Sometimes you have work that you want to schedule for off-peak times or have happen on a recurring schedule, such as every 3 hours. While there are many ways to do this, Workflow Services are an interesting option. In this episode, I'll show you how you can create a service that accepts start, stop,...

Don't you hate it when things go wrong? Most of the time on endpoint.tv, I show you when everything is working properly. On this episode, however, I'm going to show you some tools and techniques for troubleshooting what happens when you invoke a proxy with the wrong service address. Ron Jacobs blog http...

Some of the big gaps with Workflow Services have been in the area of security. In this episode, we will see the new Workflow Services Security Activity pack, which fills these holes, allowing you to Use PrincipalPermission based authorization Work with Username and SAML tokens Impersonate...