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If you are querying a collection in Silverlight 2.0 using LINQ and you want to extract a subset of the properties on the queries collection objects, you cannot make use of Anonymous Types in LINQ.

My original goal was to create a Silverlight Datagrid Control that would automatically generate a print friendly view of the data; without having to change or customize code or templates from datagrid to datagrid. 

In addition, since all the information is already at client side inside the datagrid, I wanted to avoid making unnecessary trips back to the server in order to serve the print friendly version of the datagrid to the user.

People still want to know how they can build SL2 apps using a single VS2008 machine, no virtual images and without VS2010.  There is a way to do this, but please allow me to set some major caveats.  We must first make sure that what I’m saying here is still that VS2008 does not support multi-targeting IDE development with Silverlight 2 and Silverlight 3.  What I’m also saying is that VS2008 IDE and MSBuild are two different experiences.  MSBuild could care less about an IDE and it just does what it is instructed to do…so let’s instruct it to build Silverlight 2 code, shall we?

Jacek Ciereszko has created a demo that shows how to connect Silverlight 2.0 with code html.

This demo is like a game ping-pong, but it is not really game because you not suppose to play but learn Silverlight 2.0 !

The choice of communication and serialization components in Silverlight 2 was based on developer community data and the target scenarios for the platform. Some time after the platform has shipped in October 2008 I decided to measure the level of adoption of the various technologies we added to Silverlight 2. We intended to use this data to validate our original assumptions as well as inform future releases.

Chris Klug experienced a problem with changing the layout for the selected item in ListBox. The thing that caused troubles, was the fact that it was supposed to show a compact information layout for all items except the selected item. Find out what's the solution of the problem.

The selected item should have a more verbose layout and some extra functionality. Initially that seemed like a tiny problem. That would just be a ItemTemplate with a VisualStateManager. Apparently not…!

Why not? Well…the DataTemplate does not support a VisualStateManager. When you select an item in the ListBox, the VisualStateManager that is used to change the layout is in the items ControlTemplate and not in the items DataTemplate. So the Layout in the DataTemplate does not have the ability to change its layout based on the state.

For this application, PETA supplied all the comps in Adobe Illustrator format and AIS converted the assets into Silverlight. Tad Van Fleet took the heart images and others and imported them into Blend 3 using the new Illustrator import function, and created the appropriate Xaml. A team consisting of Jim Jackson, Tad Van Fleet and Tom Snider with contractual work and a little oversight from me, put together the complete application, including the database, WCF services, server-side image generation for embedding, and of course the Silverlight client - all in just two calendar weeks.

Al Pascual demonstrates how to create a Silverlight Authentication Service so that Silverlight will use the authentication cookie.

Message based authentication managed by Silverlight not the browser.

Silverlight can use the browsers cookies and send them to the hosts. When you authenticate with ASP.NET the authentication cookie stored to your computer will be used by Silverlight if you create a Silverlight Authentication Service.