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  • Blog Post: Thoughts on Flowchart

    Last night I saw that Maurice had a few tweets that caught my attention about flowchart, but this is the one that I want to talk about: Come to think of it I also really mis a parallel execution in a flowchart. But other than that flowcharts rock! #wf4 #dm about 13    hours ago via web...
  • Blog Post: Improving ModelItem with Dynamic

    Hi all, I’m back, and apologize for the delay, things have been crazy here and I’ve taken a little time off following shipping VS2010, so I’m getting back into it.  I’d like to talk about one of my favorite late additions to the WF4 designer programming model.  We added this change sometime...
  • Blog Post: VS 2010 RC Is Available

    We’ve been hard at work here in Redmond (and with our team in Shanghai) working on getting WF ready for release.  We’ve made a ton of progress in the RC build that was made available yesterday , please download it and check it out.  Also, and in important bold text, if you have feedback, please...
  • Blog Post: Making Swiss Cheese Look Good, or Designers for ActivityAction in WF4

    In my last post , I covered using ActivityAction in order to provide a schematized callback, or hole, for the consumers of your activity to supply.  What I didn’t cover, and what I intend to here, is how to create a designer for that. If you’ve been following along, or have written a few designers...
  • Blog Post: Swiss Cheese and WF4, or, An Introduction to ActivityAction

    One common scenario that was often requested by customers of WF 3 was the ability to have templated or “grey box” or “activities with holes” in them (hence the Swiss cheese photo above).  In WF4 we’ve done this in a way that way we call ActivityAction Motivation First I’d like to do a little bit...
  • Blog Post: Inspection, Default Services and Items (WF4 EditingContext Intro Part 6)

    This part 6 of my 6 part series on the EditingContext. Introduction Sharing Functionality between Designers Host provided capabilities Providing callbacks for the host Subscription/Notification engine Inspection, Default Services and Items (you are here) I want to wrap up this series...
  • Blog Post: Emitting the mc:Ignorable Instruction In Your WF4 XAML

    Frequent forum guest Notre posed this question to the forums the other day noting that the XAML being produced from ActivityXamlServices.CreateBuilderWriter() was slightly different than the XAML being output from WorkflowDesigner.Save().   The reason for this stems from the fact that WorkflowDesigner...
  • Blog Post: AttachedProperty Part 2, Putting it Together

    On my last post , Jason jumped right to the punchline in his comment here . He asks “if there is an easy way to have the properties value serialized out to the xaml.” First, let’s look at what we need to do from the XAML side. First, create a helper type with a getter and setter for the property that...
  • Blog Post: WF4 Design Time AttachedPropertiesService and Attached Properties

    I’ve been meaning to throw together some thoughts on attached properties and how they can be used within the designer.  Basically, you can think about attached properties as injecting some additional “stuff” onto an instance that you can use elsewhere in your code. Motivation In the designer, we...
  • Blog Post: WF4 ViewStateService

    A comment posted by Notre asked for some more details about view state and attached property services, so I thought I would dive into those next.  I will follow-up in a subsequent post on the AttachedPropertyService, as there is a little bit more going on there. Motivation Why do I care about viewstate...
  • Blog Post: Where is System.Activities.Design in WF4 Beta2 and Beyond?

    I got an email over the weekend asking about this, and I realized that it’s somewhat buried in this post here .  Anyway, in Beta1, you often saw System.Activities.Design.  For beta2 (and RTM), one important change System.Activities.Design  => System.Activities.Presentation The primary...
  • Blog Post: WF4, WCF and AppFabric Sessions @ PDC09

    I’m taking this week off to catch up on everything I haven’t done the last two months and to celebrate the Thanksgiving holiday here in the US. PDC was a blast!  It was incredibly awesome to meet so many folks interested in WF and talking with others about how they are using (or plan to use) WF4...
  • Blog Post: Finding the Variables in Scope Within the WF Designer

    In this thread , one of our forum customers asked the question: “how do I find all of the variables that are in scope for a given activity in the designer?” We do not have a public API to do this.  Internally we have a helper type called VariableHelper that we use to display the list of variables...
  • Blog Post: WF4 Beta1 => Beta2 Breaking Changes Document Published

    Fresh on microsoft.com downloads, you can get the details of the major breaking changes that occurred for WF between Beta 1 and Beta 2. Get the document here . We will publish a similar document for any changes between Beta2 and RTM, although that list should be on the shorter side.  If you have...
  • Blog Post: WF4 Designer Bloggers

    I wanted to put a quick note up as the team is starting to blog a little more frequently and putting some interesting content out there.  A few places to check out to hear from the folks on the team Endpoint – This is the general WF team blog, and has had some good posts Going to PDC? Want to Meet...
  • Blog Post: Types, Metatypes and Bears, Redux

    I made a quick post a few months back where I tried to talk about the way the designer works and lets us design types, as well as simply configure instances of types. There were a couple of key points that I wanted to make there in that post: The workflow designer can configure instances of activity...
  • Blog Post: Navigating the WF4 Beta 2 Samples

    Hot off the presses (and the download center) come the WF4 Beta 2 samples here .  The team has invested a lot of time into these samples and they provide a good way to get up to speed on the way a particular feature or group of features work together. Note, there are 2300 files to be unzipped, so...
  • Blog Post: WF4 Designer Enhancements in VS 2010 Beta 2

    So, you might have heard that Beta2 has shipped .  I wanted to give a brief overview of the changes that have been made to the designer since beta1 .  So, without further ado, here are my top 10 new designer features in Beta 2 New UI Expand in place Choose Toolbox Items Imports designer Text...
  • Blog Post: Introduction to WF Designer Rehosting (Part 2)

    standard beta disclaimer.  This is written against the beta1 API’s.  If this is 2014, the bits will look different.  When the bits update, I will make sure to have a new post that updates these (or points to SDK samples that do) In yesterday’s post, we went over the core components of...
  • Blog Post: Introduction to WF Designer Rehosting (Part 1)

    standard beta disclaimer.  This is written against the beta1 API’s.  If this is 2014, the bits will look different.  When the bits update, I will make sure to have a new post that updates these (or points to SDK samples that do)   In WF3, we allowed our customers to rehost the WF...
  • Blog Post: Types, Metatypes and Bears, Oh my!

    ***** UPDATE: Please see this post for how these features and functionality work in Beta2 ***** image courtesy of flickr user chodhound This post comes about after a little conversation on the forums where I was talking about using the xaml stack save and load objects. Here’s what I said...
  • Blog Post: Introducing the WF4 Designer

    // standard disclaimer applies, this is based on the released Beta 1 bits, things are subject to change, if you are reading this in 2012, things may be, look, smell, work differently.  That said, if it’s 2012 and you’re reading this, drop me a line and let me know how you found this!   As you...
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