For the map, many people know goolemap, in fact, Microsoft also has its own map API, and is no worse than Google. For Microsoft's Bingmap, there are several versions available (Bing Maps AJAX control, Bing Maps Silverlight control, Bing Maps Web Services), which is used in Silverlight Control, you can also use it on WP7. If the new SDK can not compile, you need to silverlight4 under the System.Windows.Browser.dll to join reference.
A First of all, need to have bingmap Key, if not, that must register and obtain first, this is a bit like Google map.https://www.bingmapsportal.com/
Two. Download the Bing Maps Silverlight control and install it. The installation directory C:\Program the two DLLs under the files\bing Maps Silverlight control\v1\libraries, added as a tool to the toolbar, and can be dragged directly out. In addition, there are detailed SDK documentation in the document directory. But in my experience, not all of this API is available on WP7.
Three. Create the project:
The map control, dragged and dropped onto the window page, runs directly to see the map in the simulation.