In the Samples of Version 10.2.7 it was possible to display an overview map. (arcgis-runtime-samples-dotnet-master\src\Desktop\ArcGISRuntimeSamplesDesktop\Samples\Mapping\OverviewMap.xaml)
How can I accomplish this with the 100.2.1 Version?
The system tells me "the object already owned" when I try to use the map again.