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Our team has posted a set of WF 4 Migration documents on MSDN. You'll find 4 papers initially - an overview document which introduces migration concerns and what to do for the WF3 developer. a best practices for WF3 development paper - how to design your
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The premier Microsoft conference, the PDC - Professional Developers Conference, is happening in the week of Octobert 26th in Los Angeles! Microsoft stars will join movie stars and present a bunch of upcoming technologies and paradigms to thousands of
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RuleReevaluationBehavior has been supported in WF Rules since .NET Framework 3.0. It is an enum that you can tweak to control forward chaining and the re-evaluation on a per rule basis. Typically this property is used to prevent infinite looping due to
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It's been a while since I blogged, due to vacations and just a lot of work. I also have some additional responsibilities at work and now own Activities, Rules and Community which has been keeping me busy. Part of the reason I am busy is that I have two
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I did a webcast in May on Introduction to Windows Workflow Foundation Rules. I am doing another one this Friday, on some advanced scenarios and extensibility. I hope to see you there! Here's the registration link. I've been told that the recording will
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I will be giving a "Introduction to Windows Workflow Foundation Rules" webcast on Friday May 18th at 11am PST. Hope to see you there! Description: This session provides an introduction to the rules engine capabilities provided in Windows Workflow Foundation
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In WF V1, we targeted developers and worked with some partners to enable high level authoring capabilities on top of our foundation. InRule went out with the general availability of their support for WF this week - you can read about it here .
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There's another new sample up, written by one of our testers Charlie. This sample shows how the WF Rules Engine can be used to process rules on Xml documents. This is something BizTalk BRE customers were able to do inside the Business Rules Composer,
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Maggie, a tester on the Rules team, recently wrote a PolicyFromFile sample. The idea here is similar to the PolicyFromService sample that is part of the ExternalRuleSetDemo , except that the PolicyFromFile activity does not use a database and externalizes
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Sometimes you want to write rules against all items in a collection. In WF V1, this is not supported natively but can be achieved in the following manner: (you can come up with other ways too, but the essential idea is you want to simulate looping using
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As part of an effort to get the Microsoft field ready for the technologies the product teams are building, Microsoft organizes a conference called TechReady. It is Microsoft internal mainly meant for the Microsoft Technical Field community. TechReady
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A month ago I was investigating authoring WF rules against XML. We dont support it out of the box, but a simple way of achieving this is by exposing your XML schema as a .Net type - and then author rules against that type. Simple, and doable with XSD.exe.
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To follow up on my post from yesterday on Tuning the performance of your WF Rules , here is some code that you can use to write a custom PolicyActivity that does caching of rule sets. The dictionary caches your rule set. public class PolicyCacheService
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I'll be attending the Business Rules Forum in Washington D.C. in November. Really looking forward to getting immersed in a conference just focusing on Rules! Hopefully some of you rules folks who read my blog will be there at the conference as well, I'd
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Someone asked a question on the WF forum today about tuning the performance of his rules. Basically the WF Rules Engine is single threaded and we dont expose any knobs for you to tweak the performance of the rules in WF V1. One way for you to improve
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