The .NET Endpoint

Blog by the .NET and AppFabric teams about WCF and WF development, deployment, and management

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  • Blog Post: Error message in WF4: "The argument of type '<type>' cannot be used. Make sure that it is declared on an activity."

    The following error might occur when an activity executes: The argument of type '<type>' cannot be used. Make sure that it is declared on an activity. If the type above refers to an implementation child, then it's possible that it's being created in the Execute method of the activity. If...
  • Blog Post: WF4 Activity Pack CTP1 Available (State Machine, Database)

    I’m happy to announce that the WF4 Activity Pack CTP1 is now available for download.  This release consists of two different activities, database activities for interacting with a database and the much anticipated State Machine for authoring event driven workflows.  Here are a few key links...
  • Blog Post: Migration Guidance for the WF Developer (Beta 1 - Part 2)

    About six weeks ago, the WF team published up the first four WF3->WF4 migration guidance documents , aimed at helping WF developers prepare and think about the new WF object model runtime. Today, we published the next three documents in the series to the WF4 Migration Guidance document set . With...
  • Blog Post: Sequential and Flowchart modeling styles

    WF 4 ships with an activity palette that consists of many activities – some of these are control flow activities that represent the different modeling styles developers can use to model their business process. Sequence and Flowchart are a couple of modeling styles we ship in WF 4. In this post, we will...
  • Blog Post: A Tour on the WF4 Activity Palette

    WF4 beta 1 ships with a comprehensive set of activities (more than 35) that you can use to author your workflows or to create your own custom activities. This post will give you a quick tour through the activity palette and introduce you to the key characteristics of the out of the box activities. Activities...
  • Blog Post: The Road to 4 – WF Changes between Beta 1 and CTP

    I can’t believe it’s been a few months since my post on the Road to WF 4, and the expected impact of the new workflow model . It’s been a busy few months as the team develops and builds toward .NET 4; as we hosted an MVP Summit here in Redmond; and worked with TAP customers around using WF 4; and a few...
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