Niner since 2010
The part with two ListBoxes is very interesting. Good job.
Is it possible do it without Blend and with minimal code? I look into sample and quantity of XAML code seem to be overwhelming. It is hard to apply this to many many ListBoxes in many places.
Why is SL application split to XAPs. Why not split to DLL (one XAP shell and many DLL to download).
Split to DLL will be more "compatible and smooth" if you have single source code for SL and WPF application.
Why is better download XAP package ?
It is possible download single DLL files from web site, not XAP file ?