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Josh Reuben Workflow
Workflow Activity Extensions, Activity Packs and Unit Testing Framework contains a plethora of infrastructure code and new activities for extending Workflow Foundation 4. These are also available as Nuget packages. These include: Activity Extensions Security Activity Pack ADO.NET Activity Pack Azure Activity Pack Activity Unit Testing Framework view my PowerPoint presentation on these and more here: ......

Posted On Tuesday, August 28, 2012 8:04 AM

Azure Workflow
Workflow 1.0 beta provides new Azure functionality: – a scale-out enabled infrastructure for hosting Workflows installation on-premises, or on Azure roles You can view my full presentation on this here: I’ll bet this is released around Build Conference. Below is a short summary: Workflow Farm New distributed node managed host infra for executing workflows Scale-out load-balanced ......

Posted On Saturday, August 18, 2012 9:53 AM

Workflow 4.5 is Awesome, cant wait for 5.0!
About 2 years ago I wrote a blog post describing what I would like to see in Workflow vnext: At the time WF 4.0 was a little rough around the edges – the State Machine was on codeplex and people were simulating state machines with Flowcharts. Last year I built a near- realtime machine management system using WF 4.0.1 – its managing the internal operations of this device: ......

Posted On Wednesday, May 30, 2012 11:19 PM

Workflow 4.0.1 StateMachine - Distributed Tracking Visualization
Workflow 4 State Machine – Distributed Tracking Visualization · Disclaimer: This post requires an understanding of WF 4.0.1 , WCF and WPF. · Before I explain the how, look at the following image for the what: I am debugging a REMOTE workflow STATEMACHINE instance, and from tracking information sent from server, I am able to highlight the current state in my client! Visual Workflow Tracking Sample – a Big Ball of Mud · Workflow 4 provides the System.Activities.Presentat... class which ......

Posted On Tuesday, June 7, 2011 6:56 PM

Workflow 5.0 - not quite there yet!
After scrapping the Workflow API and starting from scratch with v 4.0 , youd think they would have built the ultimate abstraction, but no - heres my gripes: · Parallel is not parallel, just allows AsyncCodeActivity instances to asynchronously call code and receive callbacks (via BeginExecute and EndExecute) · Non recursive · VB expressions - blah · For Imperative activity definition value assignment to be evaluated during execution (instead of definition) - requires a string representation of code ......

Posted On Wednesday, August 25, 2010 1:40 PM

Oslo Required!
Limitations in workflows requiring workarounds: Designer is slow – make a coffee slow! A setStateActivity is not the end of the Workflow’s current flow! In binding, how do you access the properties of dependnecy property sub-properties? a dependency property custom activity for receieveactivity binding must be inside the receiveactivity In rule condition, you cannot reference a dependency property in a custom activity a code activity cannot work on an adjacent activity without explicitly specifying ......

Posted On Friday, October 24, 2008 7:07 PM

Sharepoint Architecture
About 2 months ago, I had to evaluate MOSS / WSS - compare its features and capacity plan. I'm not sure i want I to go down the Sharepoint path - Its too restrictive, too meta-programmy , it doesnt give you OOTB AJAX enabled WebParts, and is a different path than Silverlight (maybe the next version will be SilverPoint ?). On the flipside, the concepts of pluggable WebParts, InfoPath, Excel Services and Sharepoint Workflows are appealing. Basically, to learn sharepoint you have to read the following: ......

Posted On Monday, March 3, 2008 5:34 AM

Workflow services
· Workflow services, new for 3.5, are services that are authored using workflows. Durable services are services that use a persistence provider to persist state information after an operation has completed. · The implementation of the service contract is handled through one or more ReceiveActivity activities, which are sequence activities that support either one-way or request/response message exchanges with a client. The client invokes operations through SendActivity activities, which are basic ......

Posted On Monday, January 21, 2008 6:14 AM

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