Bing Maps moves beyond Silverlight and AJAX with the new native WPF Control, which enables you to build interactive tools for visualizing geographical data on the desktop.
"The two main alternatives to Bing Maps with WPF are Bing Maps AJAX in a Web application and Bing Maps Silverlight. I've used -- and like -- all three approaches, but I really like Bing Maps with WPF. It gives you the combined power of Bing Maps and the WPF programming model, with the convenience of the C# language.
I've found Bing Maps with WPF especially useful when I have to deal with very large data sets. In those scenarios, Bing Maps with WPF was much faster than Web-based alternatives, and it allowed me to effectively handle SQL databases with millions of records, and to display thousands of data points in real time," Dr. James McCaffrey as quoted in Visual Studio Magazine.
"Released in January, version 1 of the Bing Maps Windows Presentation Foundation (WPF) Control allows you to integrate mapping functionality directly into WPF applications."
The downloadable SDK "Bing Maps Windows Presentation Foundation (WPF) Control, Version 1.0" contains the library binaries and programming reference, provides some good examples to get you up and running, but moving beyond the sample code requires a bit more effort.