Ron Jacobs

Windows Workflow Foundation

June, 2011

Posts
  • Ron Jacobs

    How to: Implement a WCF Asynchronous Service Operation with Task<T>

    • 5 Comments
    I love Task<T>.  It has to be one of the finest innovations in the framework in the past few years.  Recently I was reviewing some old WCF documentation How to: Implement an Asynchronous Service Operation which was probably written in...
  • Ron Jacobs

    Windows Workflow Foundation (WF4) ParallelFor Activity

    • 0 Comments
    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...
  • Ron Jacobs

    Windows Workflow (WF4) Task Parallelism with Sequences

    • 0 Comments
    In my last post The Workflow Parallel Activity and Task Parallelism I said that you can implement Task Parallelism with Windows Workflow Foundation.  In this post I want to explore some of the differences between the Parallel Activity in System.Workflow...
  • Ron Jacobs

    The Workflow Parallel Activity and Task Parallelism

    • 2 Comments
    “ Task parallelism (also known as function parallelism and control parallelism ) is a form of parallelization of computer code across multiple processors in parallel computing environments. Task parallelism focuses on distributing execution processes...
  • Ron Jacobs

    Windows Workflow Foundation (WF4) Activities and Threads

    • 0 Comments
    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...
  • Ron Jacobs

    Authoring Activities in Code or XAML

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    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...
  • Ron Jacobs

    XAML and Activity Assembly Spoofing

    • 2 Comments
    Recently I was contacted by a customer who had read my posts on Versioning and was investigating some interesting behavior of activity designers (more on this in a future post).  But this discussion got me to thinking.  As I pointed out in my...
  • Ron Jacobs

    How To Load WF4 Workflow Services from a Database with IIS/AppFabric

    • 2 Comments
    This morning I saw a message post on the .NET 4 Windows Workflow Foundation Forum titled Load XAMLX from database .  I’ve been asked this question many times. How can I store my Workflow Service definitions (xamlx files) in a database with IIS and...
  • Ron Jacobs

    Creating a State Machine in Code

    • 4 Comments
    Lots of people create state machines.  There are many examples on the web of people who are building class libraries to make it easy to create a state machine.  These people typically don’t need (or want) to use a workflow designer or see a...
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