We noted simple, but annoying bug in the MapView control: If control is disposed just after creation, it throws Null Reference exception.
using (MapView ctl = new ThinkGeo.UI.Wpf.MapView())
// intentionally blank
} // << here ctl will throw NRE.
We have fixed this one. Could you try with latest V12 beta version. There is one thing I need mention. For the V12. If we need use the mapview in the code instead of drag the control to the xaml page. it may give you some error. Because the map need some wpf control to support it.
Here are more detail.
As I mentioned if you want to do something in memory instead present the UI. You could use the Layer object.