I've published a new article on my main weblog explaining how to create a CollectionViewSource control in Silverlight 2.0. The article has been written in english to get in touch with a mor broader audience.
CollectionViewSource is a component originally developed for Windows Presentation Foundation and present in the System.Data namespace from the first release. Is is very useful to filter, sort and group data before it has binded to an user interface control. It work as a filter interposed between Data and consuming control and may be customized in a very easy way. Silverlight 2.0 does not have a similar class so I've worked hard to create this control to support my work and I've decided to release it under the CCPL license on codeplex (http://www.codeplex.com/silverlight).
The full explanation of its internal working is available at this address:
http://blog.boschin.it/articles/Improving-Silverlight-2.0-databinding-with-a-CollectionViewSource-control.aspx
Please leave a comment if you like this article. I hope it is written in a good english, but if you have some comments on this argument please feel free to contact me on my contact form: http://blog.boschin.it/contact.aspx