如何使用WPF Bing Map作为DataTemplate？

Using the Bing Maps WPF-SDK it is esy to integrate a map. But I would like to use the Bing-Map as DataTemplate for an ItemsControl element. If I do so, unfortunately, the maps object does not react to any bindings and it obviously does not accept the Credentials Key. My code is as follows:Using the Bing Maps WPF-SDK it is esy to integr