Ron Jacobs

Windows Workflow Foundation

Posts
  • Ron Jacobs

    Living through "The Change"

    • 4 Comments
    Funny how it happens, but things change don't they?  Our applications, as perfect as they are when brand new, grow and change over time and like teenagers, sometimes these changes are quite painful. Over the past few weeks we have been speaking to...
  • Ron Jacobs

    Help - My Head Is Exploding

    • 4 Comments
    At Tech-Ed this year I felt a new vibe from the people I talked to.  This feeling has been there before but this year it was even more pronounced.  It was the feeling that your brain just couldn't take any more.  In the past we used to...
  • Ron Jacobs

    Time For A Change

    • 4 Comments
    Every 2 or 3 years I get the yearning to make a change.  After 2.5 years of doing ARCast and speaking about architecture I've decided once again to make a career change.  Starting Feb 8th I will become the primary WCF / WF evangelist at Microsoft...
  • Ron Jacobs

    Today's Learning: ReplicatorActivity

    • 4 Comments
    Did I mention that I'm not the worlds leading expert on Windows Workflow Foundation?  Well if I didn't please allow me to say it again. Like you I'm just learning a lot of new stuff.  To get my arms around WF I'm reading the book Windows Workflow...
  • 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...
  • Ron Jacobs

    How to create a WF4 WorkflowServiceHostFactory for AppFabric Auto-Start

    • 4 Comments
    Sometimes when using Windows Workflow Foundation (WF4) you need to create a custom WorkflowServiceHostFactory.  There are a couple of main reasons why you would want to do this. To configure the WorklfowServiceHost in some way like adding an extension...
  • Ron Jacobs

    Stepping Through .NET Source with VS2010 and .NET 4

    • 4 Comments
    This morning I stumbled across something so cool… I had no idea it existed (I know some of you are saying… “What he didn’t know about this?) How many times have you wanted to debug right into the source of .NET?  The feature is there, just turn it...
  • Ron Jacobs

    State Machine Activity Pack and ADO.NET Activity Pack CTP1 Release now Available

    • 4 Comments
    For the last year I’ve had to say “Sorry we don’t have the State Machine in WF4.”  If you are a fan of the state machine I’ve got good news.  Today the team is releasing the first CTP of a couple Activity Packs on CodePlex.  To give them...
  • Ron Jacobs

    WCF Security Is Hard

    • 4 Comments
    Ok… I said it.  Let’s just admit the truth for a second.  It is hard.  Recently somebody contacted me about a security problem and asked for me help.  I’m probably the wrong guy to ask.  After all, I’m an evangelist.  That...
  • Ron Jacobs

    WCF Security Spike – Day 1

    • 4 Comments
    My first goal was to secure a service.  I’m happy to say I managed to get a service that allowed one user and didn’t allow another by using a PrincipalPermission with wsHttpBinding (I gave up on netTcpBinding for now – one monster at a time right...
  • Ron Jacobs

    Unit Testing with Windows Server AppFabric Caching

    • 3 Comments
    I like to do TDD whenever I can.  So today I was writing some code that would be using the distributed cache features of Windows Server AppFabric and I decided to write unit tests first and then implement my code. Writing code that uses an external...
  • Ron Jacobs

    Windows Server AppFabric Beta 2 and Visual Studio 2010 / .NET 4 RTM

    • 3 Comments
    The emails are rolling in…  Usually they say something like this. Hi Ron - I installed VS2010 and the .NET 4.0 Framework RTM versions yesterday. I then went to re-install Windows Server AppFabric from the Web Platform Installer, but it has a dependency...
  • Ron Jacobs

    Using Workflow Services and Silverlight Together

    • 3 Comments
    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...
  • Ron Jacobs

    How to consume a WCF Service from a WF4 Workflow

    • 3 Comments
    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...
  • Ron Jacobs

    Interesting Twist on Auto starting a Workflow with IIS / AppFabric

    • 3 Comments
    Pablo Castilla contacted me about his take on auto starting a workflow with IIS and AppFabric. WF 4.0: How to automatically start a workflow by itself hosted in AppFabric It looks interesting.  I read the code but I have not tried it myself. ...
  • Ron Jacobs

    Confessions of a RESTful newbie

    • 3 Comments
    Over the years various people have asked me what I thought about REST as a style for implementing services.  For most of that time I felt that it was something that I didn't need to know or care about.  However... those days have now come to...
  • Ron Jacobs

    Implementing the Asynchronous Programming Model

    • 3 Comments
    After the fun I had yesterday building my Yahoo Services Search Proxy (see my previous post ) today I decided to see if I could extend my proxy to support the Asynchronous Programming Model. And what is more, I wanted to use the TDD process to do it. ...
  • Ron Jacobs

    What I've learned so far about REST with Yahoo Services

    • 3 Comments
    Well - I finally finished my Yahoo Services sample .  After I poked around on their site a bit more I found their search SDK .  I have to say I think mine is better of course :-).  I didn't put the Asynchronous Programming Model in the...
  • Ron Jacobs

    Why the wait?

    • 3 Comments
    I wasn't planning on writing a blog post now but... since Windows Explorer has given me a moment I decided to take this time to ask the question "Why?" I've just uploaded a couple of files to a SharePoint site and I thought that I ought to organize...
  • Ron Jacobs

    My RESTful Client / Service Sample

    • 3 Comments
    I worked right up to the wire here at Tech-Ed Israel.  I have to speak in just 2 hours so I'm calling it done for now.  This sample code demonstrates a RESTful Service API over the AdventureWorks database.  The code is not something you...
  • Ron Jacobs

    Death at the hands of the Demo gods or PowerPoint glitch? You decide....

    • 3 Comments
    At Tech-Ed Israel I tried a technique I got from Juval Lowy with PowerPoint for the first time.  What Juval does is he clicks on an icon of Visual Studio to start it with the correct solution already loaded.  After sitting through his class...
  • Ron Jacobs

    Supportability - Keeping the "Main Thing" the "Main Thing"

    • 3 Comments
    What is the main task of your application? Who is your application written for (the customer)? Supportability is a property of the application that helps to insure that your customer can accomplish the main task that your application is designed to support...
  • Ron Jacobs

    Why Does my DelayActivity's InitializeTimeoutDuration not work?

    • 3 Comments
    The other day I was writing some unit tests for a StateMachine workflow.  My StateMachine had a state where it uses a ReceiveActivity to receive a web service message.  In the same state it has an event that uses a DelayActiviity to handle a...
  • Ron Jacobs

    Clean that Project

    • 3 Comments
    Have you ever noticed that when you tell VS to "Clean" it doesn't really clean?  I don't know what it actually does but after a clean I still see bin and obj folders under my project.  When I want to share code with people I usually...
  • Ron Jacobs

    Tip: Accessing the GAC Quickly and Easily

    • 3 Comments
    Have you ever been working with a colleague who asked you to do something like show me the GAC and then told you the coolest trick in the book about how to do it? Then for a brief moment you feel like a total dork because you didn't know how to do this...
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