public SpatialReference SpatialReference {get;}

{
  // Note: Needs QueuedTask to run
  {
    //Create a point
    var pt = MapPointBuilderEx.CreateMapPoint(x, y, spatialReference);
    //Buffer it - for purpose of zoom
    var poly = GeometryEngine.Instance.Buffer(pt, buffer_size);

    //do we need to project the buffer polygon?
    if (!MapView.Active.Map.SpatialReference.IsEqual(poly.SpatialReference))
    {
      //project the polygon
      poly = GeometryEngine.Instance.Project(poly, MapView.Active.Map.SpatialReference);
    }

    //Zoom - add in a delay for animation effect
    mapView.ZoomTo(poly, new TimeSpan(0, 0, 0, 3));
  }
}