public void Initialize()
{
_container.RegisterType<ContentAndNavigationViewModel>(new ContainerControlledLifetimeManager());
IRegion region = _regionManager.Regions[RegionNames.ContentRegion];
var windowInteractionView = _container.Resolve<ContentAndNavigationView>();
region.Add(windowInteractionView, "ContentAndNavigationView");
region.Activate(windowInteractionView);
}