In my previous posts I’ve been arguing that you can implement Task Parallelism with Windows Workflow Foundation (WF4).  This post is a part of a series on WF, Parallelism and Threading Windows Workflow Foundation (WF4) Activities and Threads The Workflow Parallel Activity and Task Parallelism Windows...

Most of the time in software when we say “Parallel” we mean that multiple threads are being used to do work concurrently.  Because of this, many customers ask if the Parallel activity works this way in Windows Workflow Foundation.  I know there is a great deal of confusion about activities...

With Windows Workflow Foundation (WF4) you can author activities in Code or XAML.  Each has advantages and disadvantages Visibility Advantage – XAML You can author them in the Workflow Designer.  Here is a activity I’ve been working with today.  You can easily see what this activity does...

In my previous post on WorkflowServices, CanCreateInstance and Silverlight I shared with you some of the pain that I went through in building my first Silverlight / Workflow Services app. Much of this pain was just because I have not done a great deal of work with Silverlight and WCF. In this post I’m...

While working on signing assemblies you may run into a problem I encountered this morning so here goes… Problem XamlBuildTask fails when referencing a Delay Signed assembly To see this in action try the following Create a Workflow Console Application (WorkflowConsoleApp1) Create an Activity Library ...

If you are using .NET 4 Platform Update 1 to do unit testing you may encounter this dialog box when you try to change the target framework of your test project Tip: You can press Ctrl+C on a message box to copy the text to the clipboard.  If you want to go to the link mentioned in the message box...

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...

Update 12/3/2011: Microsoft.Activities is now Microsoft.Activities.Extensions When I first saw NuGet I knew I had to find a way to take advantage of this great new way to deliver code to you. It took a few months but finally the other day I decided to spend an afternoon working on a NuGet package...

So you want to know how the state machine really works? Take a look at the WF4 State Machine Explorer .  This sample is designed to show you how StateMachine works with activities. There are three transitions from State1. To State 2 which is triggered by a bookmark named “State2” To State 3 which...

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 .NET Framework 4 Extended Look for...