Is the source code for the examples featured in the xamShowcase available for download?
Absolutely. It's installed as part of our NetAdvantage for WPF product that you can download: http://es.infragistics.com/dotnet/netadvantage/wpfdownloads.aspx
The installer should put the samples under your All Users/Public documents folder. Typically, they're in C:\Documents and Settings\All Users\Documents\Infragistics\NetAdvantage for WPF 2007 Vol. 2\Samples on XP and C:\Users\Public\Documents\Infragistics\NetAdvantage for WPF 2007 Vol. 2\Samples on Vista.
There is also a link in the Quick Start (which is displayed after installation completes and can be accessed later from your Start Menu -> Infragistics -> NetAdvantage for WPF 2007 Vol. 2 -> Get Going -> Quick Start). Starting in NA for .NET 2007 Vol. 1, we are putting these quick starts in all our products.
HTH,
thanks, I'll download the latest NetAdvantage for WPF product as in the one I've got I only have the XamlFeatureBrowser samples.