Region Manager can not find region inside of the custom popupwindow

Question

I have a ShellView using interactivity objects with prism\'s PopupWindowAction for show my custom settings view. And my ShellViewModel contain InteractionRequest object and

Answer 1

Probably you need to set the region manager manually, in the popup view's code behind (constructor), like this:

RegionManager.SetRegionName( theNameOfTheContentControlInsideThePopup, WellKnownRegionNames.DataFeedRegion );
RegionManager.SetRegionManager( theNameOfTheContentControlInsideThePopup, theRegionManagerInstanceFromUnity );

You'll have to assign a name to the content control hosting the region and somehow acquire the region manager (ServiceLocator.Current.GetInstance<IRegionManager>()).