private void CenterOnUser()
{
if (ViewModel.FirstLocationAcquired && MapControl?.VisibleRegion != null)
{
MapControl.MoveToRegion(MapSpan.FromCenterAndRadius(ViewModel.LastUserLocation,
MapControl.VisibleRegion.Radius));
_locationChangedSubscription?.DisposeIfDisposable();
_locationChangedSubscription = null;
}
}