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...

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...

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 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...

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...

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...

This part 5 of my 6  part series on the EditingContext. Introduction Sharing Functionality between Designers   Host provided capabilities    Providing callbacks for the host   Subscription/Notification engine (you are here) Inspection...

This part 4 of my 6  part series on the EditingContext. Introduction Sharing Functionality between Designers  (you are here) Host provided capabilities Providing callbacks for the host Subscription/Notification engine Inspection, Default Services...

This part 3 of my 6  part series on the EditingContext. Introduction Sharing Functionality between Designers   Host provided capabilities  (you are here) Providing callbacks for the host Subscription/Notification engine Inspection, Default...

This part 2 of my 6 part series on the EditingContext. Introduction Sharing Functionality between Designers  (you are here) Host provided capabilities Providing callbacks for the host Subscription/Notification engine Inspection, Default Services...

I want to briefly touch on the editing context and give a little introduction to its capabilities.  This is part 1 of a 6 part series Introduction (you are here) Sharing Functionality between Designers Host provided capabilities Providing callbacks...

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...

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...

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...

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...

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 ...

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...

One fun thing we will be doing this year is using the theater in our lounge/booth area to have a few chalk style presentations.  These will be brief 30 minute demo/ q&a / conversation sessions with somebody from the product team.  These...

I’m hoping that this PDC might be a little different and I may actually get to attend some sessions, rather than just prepping for mine (or the others from my team ).  I’ve gone through all 22 pages of published talks, and I think there are some...

Here’s a quick one “I’d like to find out if the workflow in the designer is valid… is there someway to retrieve the validation errors?” Yes, the short answer is that you need to provide an implementation IValidationErrorService .  There is one important...

photo courtesy of flickr user mikeweston   This is a something that the .NET team is putting together that has a contest with super cool prizes (seriously, 12 day trip to the Galapagos, for real (as my 4 year old says)).  (obligatory legalese...

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...

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...

In this post I published an overview of the designer architecture.  I’ll copy the picture and the description of what I want to talk about today. There are a few key components here Source In VS, this is xaml, but this represents the durable storage...

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...