Ron Jacobs

Windows Workflow Foundation

Posts
  • Ron Jacobs

    My New Role

    • 5 Comments
    Well after nearly 14 years, 20 countries, dozens of Tech-Ed's, PDC's, and numerous other events my career at Microsoft is coming to an end. I've made remarkable progress thanks to the generosity of many friends and supporters around the world who helped...
  • Ron Jacobs

    Status Update

    • 5 Comments
    Thanks to the many supporters and friends who contributed to my first round of fundraising I have been able to start an experiential treatment/therapy to help with my Dercums Disease symptoms. If you are able to contribute to the Ron Jacobs Dercums Disease...
  • Ron Jacobs

    I will return...

    • 6 Comments
    Thank you to the many friends who have helped to pay for my experimental treatment with the CVAC machine. I'm so happy to let you know that I'm getting better day by day. In fact, I believe that I will be able to return to work perhaps in the next few...
  • Ron Jacobs

    Another Post...

    • 4 Comments
    I know I said that my previous post was my last post. Today I checked my Microsoft email for the first time in a long time and I found several emails from people asking for an update on my condition so here goes... It's Worse Since I wrote my previous...
  • Ron Jacobs

    My Last Post

    • 49 Comments
    A few months ago I wrote this post about my diagnosis with Adiposis Dolorosa (Dercum's Disease) . After writing it I had a brief reprieve from the symptoms and for a while I was able to work part time. Then in September I had surgery to remove some of...
  • Ron Jacobs

    The Amazing Race

    • 1 Comments
    I’ll never forget the first time I heard someone mention a “Race Condition”.  In my younger years when I was more worried about what people thought of me I was to embarrassed to admit that I didn’t really know what they were talking about. ...
  • Ron Jacobs

    Less is More

    • 6 Comments
    I am a musician. Over the years I have played keyboards in many bands, traveling and performing mostly as a hobby. I’ll never forget what one of my mentors taught me. He said “The rest is just as important as the note” The rest is the part of the song...
  • Ron Jacobs

    How to use LINQ in a Workflow

    • 1 Comments
    Question Can I use a LINQ Query such as the following in a Workflow? private static void ShowQueryWithCode(IEnumerable< string > names) { Console.WriteLine( "Linq Query in Code - show names that start with 'R'" ); // Assuming there are...
  • Ron Jacobs

    How to make a library portable and data binding friendly at the same time?

    • 2 Comments
    Here is the challenge.  Create a portable library that could be used by almost anything including Console Apps, Windows Phone, ASP.NET, Xbox 360 Make it data binding friendly for targets like WPF, Silverlight and Windows 8 XAML Metro Apps by supporting...
  • Ron Jacobs

    My Essential Development Tools

    • 12 Comments
    There are a few development tools that I just can’t live without. ReSharper A few years ago I was sitting in Glenn Block’s office when I noticed some strange additions to Visual Studio.  When I asked him about it he said “That’s ReSharper” and I...
  • Ron Jacobs

    What’s Up With Ron

    • 13 Comments
    Nearly every day I get email from someone asking for help.  I wish I had time to answer every question.  I used to answer more of them but recently I was diagnosed with Adiposis Dolorosa. Adiposis dolorosa , or Dercum disease, is a rare condition...
  • Ron Jacobs

    Three Simple Rules for Better Debugging with WorkflowApplication

    • 3 Comments
    Developers often say that there is a steep learning curve with Windows Workflow Foundation (WF4).  I won’t deny that… instead, allow me to share three simple rules that will help you to get over that curve sooner and to make them easy to remember...
  • Ron Jacobs

    What State is my StateMachine in?

    • 7 Comments
    Recently saw this question in the MSDN Workflow Forum Is there a (SetState) in the new StateMachine Activity? Many users of Workflow in .NET 3.5 took advantage of the StateMachineWorkflowInstance class to determine what state a workflow is in, and also...
  • Ron Jacobs

    Extending ASP.NET MVC Account Registration with Workflow (WF4)

    • 7 Comments
    One thing that many web sites do is to verify email addresses by sending you an email to complete registration.  I decided to build a Registration system for ASP.NET MVC using Windows Workflow Foundation. When you create a new ASP.NET MVC web site...
  • Ron Jacobs

    Troubleshooting Workflow Services with diagnostic logging

    • 4 Comments
    Sometimes you have a workflow service that is misbehaving in a production environment.  How do you figure out what is going on when you can’t attach a debugger? The solution is to use Workflow Tracking.  There are two alternatives you can try...
  • Ron Jacobs

    How To Enable Service Metadata for Workflow Services

    • 0 Comments
    Try this… Create a new ASP.NET Web Application (MVC or Web Forms).  Then add a new a WCF Workflow Service to your web project. Now try to add a service reference to your workflow service.  It fails with an error. There was an error downloading...
  • Ron Jacobs

    Troubleshooting Silverlight, WorkflowServices, WCF and Behavior Extensions

    • 0 Comments
    In my previous posts I’ve written about my experiences with WorkflowServices and Silverlight. Troubleshooting Workflow Services / Silverlight Using Workflow Services and Silverlight Together WorkflowServices, CanCreateInstance and Silverlight Problem...
  • Ron Jacobs

    WF4 WorkflowServices Troubleshooting Tip: Browse the XAMLX

    • 0 Comments
    I was doing some work on my Contoso HR Workflow Services sample application today when for some strange reason things were not working at all.  I found that when I tried to send a message to the Workflow Service from the ASP.NET code I got this exception...
  • Ron Jacobs

    Visual Studio 11 Preview and .NET 4 Platform Update 1 Side by Side Bug

    • 3 Comments
    If you install the Visual Studio 11 Preview release on a machine that has .NET 4 Platform Update 1 installed you will find that projects targeting .NET 4 Platform Update 1 will fail to build properly.  The error you will get is 'System.Activities...
  • Ron Jacobs

    Using the WCF Test Client to Test Your Workflow Service

    • 0 Comments
    If you need a quick and simple way to manually test your WorkflowService the WCF Test Client makes it simple but there are a few tips that will make your life much easier. Tip: Add the WCF Test Client to your Visual Studio Tools menu Select Tools / External...
  • Ron Jacobs

    Troubleshooting Workflow Services / Silverlight

    • 0 Comments
    From time to time I’ll hear from somebody who is trying to use a WCF Workflow Service with Silverlight as the client and they are getting this exception. System.ServiceModel.CommunicationException was unhandled by user code Message=An error occurred while...
  • Ron Jacobs

    XamlInjector–Cannot create unknown type errors

    • 0 Comments
    If you are using Microsoft.Activities.UnitTesting.XamlInjector to mock activities you may run into an error like this. Test method XamlInjectorRepro.Test.UnitTest1.TestMethod1 threw exception: System.Xaml.XamlObjectWriterException: Cannot create unknown...
  • Ron Jacobs

    How to create a Custom Activity Designer with Windows Workflow Foundation (WF4)

    • 0 Comments
    The Windows Workflow Foundation (WF4) - Custom Activity Designer sample demonstrates how you can build an activity and activity designer.  It includes three projects MyActivityLibrary - The activity library project MyActivityLibrary.Design - The...
  • Ron Jacobs

    MSTest [DeploymentItem] and Environment Variables

    • 3 Comments
    Today I’ve been fixing up the build system for Microsoft.Activities and Microsoft.Activities.UnitTesting.  Over time I’ve been using a combination of strange tools and batch files to build things but it became such a mess I decided to take the time...
  • Ron Jacobs

    CleanProject - Cleans Visual Studio Solutions For Uploading or Email

    • 6 Comments
    You know those little tools you build to help in your development?  The ones that you slapped together in a hurry and might not work all the time but you put up with them because you don’t want to take the time to fix them?  Well CleanProject...
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