Hi,
So far I didn't find any use of minimap in Bing Map for WPF, however found an implementation in silverlight where minimap is been used with bingmap,
you can do some research on
https://rbrundritt.wordpress.com/ and this blog has good resource on bingmap,
Furthermore if can consider commercial support you can also checkout
http://www.telerik.com/help/wpf/t_telerik_windows_controls_map_minimap.html
The following example uses some html and silverlight meshup to gain the minimap feature
http://rbrundritt.wordpress.com/2010/05/14/bing-maps-silverlight-with-3d-mini-map/
check if you can leverage the ideas.
Best of luck
Md. Masudur Rahman
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