private void WpfMap_Loaded(object sender, RoutedEventArgs e)
        {
            Map1.MapUnit = GeographyUnit.DecimalDegree;
            Map1.CurrentExtent = new RectangleShape(-155.733, 95.60, 104.42, -81.9);

            Marker marker = new Marker(0,0);
            marker.ImageSource = new BitmapImage(new Uri("image created by Telerik path", UriKind.RelativeOrAbsolute));
            marker.Width = 30;
            marker.Height = 30;
            SimpleMarkerOverlay markerOverlay = new SimpleMarkerOverlay();
            markerOverlay.Markers.Add(marker);

            Map1.Overlays.Add("WMK", markerOverlay);
            Map1.Refresh();
        }