Building C# expressions support and IntelliSense in the rehosted workflow designer

The Workflow Foundation Designer can be rehosted in environments outside of Visual Studio for the purposes of creating, modifying, and monitoring workflows. Hosting the workflow designer inside a Windows Presentation Foundation (WPF) application is a common rehosting scenario for the workflow designer. Prior to .NET Framework 4.5, all expressions in workflows could only be written…

Side by Side Versioning with a Web-Hosted Xamlx Workflow Service video and download on Code Gallery

I have created a video walkthrough of implementing side-by-side versioning with a web-hosted xamlx workflow service here: Side by Side Versioning with a Web-Hosted Xamlx Workflow Service This project provides a demo of implementing side-by-side versioning with a web-hosted xamlx workflow service, as described in the accompanying MSDN topic Side by Side Versioning in WorkflowServiceHost….

New Book on WF 4.5

Congratulations to Bayer White on his recently published book, Pro WF 4.5 !

Workflow Session at //build/

We delivered a Workflow session at the //build/ conference yesterday.  Slides and a recording of the presentation are now available; it was a great opportunity to provide an update on all of our recent investments.  It was a packed session with lots of good questions and discussions afterward.  Thank you to everyone who was able to…

New Case Study from PayGlobal

We have a new case study from one of our good partners, PayGlobal.  The case study does a great job describing how WF contributes to their Exolvo solution.  It also highlights the developer productivity gains that PayGlobal’s consultants and customers are seeing from the Workflow designer enhancements we made in .NET 4.5 and Visual Studio 2012.  From…


AppFabric Server

I’ve gotten a few questions about AppFabric for Windows Server, so I’d like to share some thoughts on the topic, specifically on the Workflow management aspects of AppFabric Server. First, it’s important to clarify what AppFabric Server is/isn’t, since I’ve seen some confusion on this.  Simply put, AppFabric provides a set of extensions for IIS-hosted…


Workflow Investments

We’ve been making significant investments in Workflow since the release of .NET 4, and now that we’re starting to wrap up some of these investments, I thought it would be worthwhile to provide a summary. The work falls into 3 major areas: Improvements in Windows Workflow Foundation in .NET 4.5 and Visual Studio 2012, which…


Windows Azure, Office 365 and SharePoint 2013 Workflows

Scott Guthrie has a new blog post which highlights our work to support the new model for SharePoint apps and workflows in SharePoint 2013 and the next version of Office 365.   You can find more on SharePoint 2013 workflows, which are based on WF 4.5, on MSDN here. 


TechEd Presentations Available Online

We delivered two presentations at TechEd in June; thanks to everyone who attended in person.  The recordings and presentations are available online: What’s New in Windows Workflow Foundation 4.5 Building, Running, and Managing Workflows on Windows Azure   Hope you find these useful. Leave us your comments below.


Exception Using VB Expressions in Visual Studio 2012 RC

When using VB Workflow projects in Visual Studio 2012 RC, you may receive a System.InvalidCastException while editing expressions. The Exception message would be similar to the following:   An exception has been encountered. This may be caused by an extension. You can get more information by examining the file’C:\Users\username\AppData\Roaming\Microsoft\VisualStudio\11.0\ActivityLog.xml’.     After closing the exception, IntelliSense…