Announcing the new Microsoft SDK for Facebook Platform
Today, as part of our ongoing collaboration with Facebook, we released a very exciting new developer resource: the Microsoft SDK for Facebook Platform (http://www.microsoft.com/facebooksdk). This SDK combines the power of Web, client and social technologies to enable millions of developers to transform their imagination into next generation application experiences. We look forward to seeing the creative applications that developers will create for Facebook that will open up new avenues for users to share and connect with their friends.
WPF NewsFeed sample control
Since 2007, Microsoft has been working to provide developers with the option to quickly and efficiently build Facebook applications across the breadth of our portfolio, ranging from Visual Studio to Zune, Xbox Live, Windows Messenger and Live Search.
Additionally, in April 2009, we participated in the Facebook Technology Tasting event where we demoed two applications that showcased the ease of viewing photos with an application built in Silverlight and .NET (highlighted in an article by Jason Kincaid/TechCrunch: http://www.techcrunch.com/2009/05/01/microsoft-shows-off-the-power-of-facebooks-new-apis/).
This latest release of the Facebook SDK (Toolkit) combines the latest in Web and Client platform innovations with leading Social technologies (services) together to enable millions of developers and designers to transform their imagination into the next generation application experiences.
Intellisense for the Facebook API
No matter what your application flavor is, the Microsoft SDK for Facebook Platform supports the development of applications across Silverlight, WPF, ASP.NET, ASP.NET MVC, and Windows Forms, enabling easy consumption of Facebook services delivered through the Facebook Open Stream API (http://wiki.developers.facebook.com/index.php/Using_the_Open_Stream_API).
Sound daunting? It’s not – the SDK contains a wide range of samples, controls, templates and help documentation which means using the tools is a cinch. Let your imagination fly! With more than 300 million users and more than 1 million developers on Facebook, and 6M Microsoft software developers there is a whole new world waiting for you.
Get started today at www.microsoft.com/facebooksdk.

RedCritter has also released it's free RedCritter Silverlight SDK for Microsoft Outlook. It makes it very easy to create Silverlight Apps that run inside Microsoft Outlook. It also includes a free RedCritter Silverlight SDK for SalesForce.com. You can download them both at www.redcritter.com
This will be an i-opener for all the FB developers.... will start exploring....
Amazing how much MS interest has changed FB. We're already being asked for an implementation path by our more adventurous clients - though the requests have been coming in since 2008!
This would rock !!!!
Great to hear I have sdk from Microsoft.
Can't get answers to problems because Facebook help is not helpful. SO can you tell me what this error is and how to correct it?
Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB6; FBSMTWB; .NET CLR 1.1.4322; .NET CLR 2.0.50727; OfficeLiveConnector.1.3; OfficeLivePatch.0.0; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
Timestamp: Tue, 10 Nov 2009 02:18:48 UTC
Message: Syntax error
Line: 9
Char: 1
Code: 0
URI: http://b.static.ak.fbcdn.net/rsrc.php/z7IAZ/hash/dws1kqxk.css
Now I'll never get any sleep this week.....
Thank you so much for providing this! I was literally just digging into the Facebook APIs this morning. This will make life significantly easier for Silverlight devs!
very cool. going to have to check out the ability to grab from the photo stream to see if i can incorporate it into my current Silverlight project ImageWind.net
glad to see this released, thanks for the info!