October, 2010

Over the last few weeks the WCF team has been working on a variety of new projects to improve WCF’s support for building HTTP-based services for the web. We have also focused on a set of features to enable JavaScript-based clients such as jQuery. We are proud to announce that these projects are now live and available for download on http://wcf.codeplex.com . You can get both the binaries and the source code, depending on your preference. Please note that these are prototype bits for preview purposes...

If you are building for the web and the cloud, then you know that HTTP is important. WCF is no stranger to HTTP. Since .NET 3.5, we’ve been continually delivering capabilities in the platform to enable developers to expose services as resources over HTTP. Now we’re looking to raise the bar several notches. At PDC, I’ll be showing work we are doing to unlock the full richness of HTTP within your network based applications. We’re going to let you have complete control over HTTP. Support a multitude...

(Note: The previous article on customizing commands for a rehosted Workflow Designer is here . It is probably better to go that way if you are only shipping designers in rehosted scenarios.) Due to another forum thread on customizing command behavior for workflow activities, I have been trying to create custom activities which override the workflow designer’s command handling in Visual Studio. And learned some WPF trivia. I started playing by adding CommandBindings on a custom activity designer,...

Part 1 is here . At the end of Part 1, I’ve decided it’s time to try this COM Message Filter thing out. Implementing the IMessageFilter interface and registering the message filter turns out to be not hard at all, because really, in our case the message filter doesn’t need to do anything complicated, it just needs to return RETRY a lot. Yes, not hard at all, except… suddenly my application starts crashing during random calls to DTE. Arg! What has gone wrong? 0xe00000005 The exception is Access Violation...

Only 8 more days to go ‘til October 28! PDC is sold out, but if you’re not attending in person, 1) keynotes and sessions are going to be streaming live 2) there might be a local event in your area to attend. Locations are listed here . For all 6 continents. I’m looking forward to it! Blog Post by: tilovell09

Here are some great resources to get you started. Intro the WF4 Hands On Lab Intro to Workflow Services / AppFabric Hands On Lab (Part of the Visual Studio 2010 Training Kit ) endpoint.tv – countless episodes of video goodness WF/WCF/AppFabric samples on MSDN Code Gallery WF4 Samples on MSDN Code Gallery WF4 Developer Center on MSDN Blog Post by: Ron Jacobs

It might be the first time I someone contacted me to about a blog they wrote about custom WF activities. Of course I was chuffed that they thought I might be interested. The articles really were interesting to me so I’m doubly happy to link them: http://www.neovolve.com/post/2010/10/01/Custom-Windows-Workflow-activity-for-dependency-resolutione28093Wrap-up.aspx Quick spiel: Not only does Rory Primrose tackle the basic problem of doing dependency injection as a workflow activity, he also adds a custom...