private void WpfMap_Loaded(object sender, RoutedEventArgs e)
        {
            Map1.MapUnit = GeographyUnit.DecimalDegree;

            ShapeFileFeatureLayer layer = new ShapeFileFeatureLayer("../../sampledata/data/countries02.shp");
            layer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.Country1;
            layer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

            LayerOverlay overlay = new LayerOverlay();
            overlay.Layers.Add("world", layer);
            Map1.MapClick += new System.EventHandler<MapClickWpfMapEventArgs>(Map1_MapClick);

            PopupOverlay popupOverlay = new PopupOverlay();
            Map1.Overlays.Add("WMK", overlay);
            Map1.Overlays.Add("POPUP", popupOverlay);

            InMemoryFeatureLayer highlightLayer = new InMemoryFeatureLayer();
            highlightLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.CreateSimpleAreaStyle(GeoColor.StandardColors.Yellow);
            highlightLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
            overlay.Layers.Add("highlight", highlightLayer);

            Map1.Refresh();
        }

        void Map1_MapClick(object sender, MapClickWpfMapEventArgs e)
        {
            ShapeFileFeatureLayer shapeLayer = (Map1.Overlays["WMK"] as LayerOverlay).Layers["world"] as ShapeFileFeatureLayer;
            InMemoryFeatureLayer highlightLayer = (Map1.Overlays["WMK"] as LayerOverlay).Layers["highlight"] as InMemoryFeatureLayer;

            shapeLayer.Open();
            Collection<Feature> features = shapeLayer.QueryTools.GetFeaturesContaining(e.WorldLocation, ReturningColumnsType.AllColumns);
            highlightLayer.InternalFeatures.Clear();

            if (features.Count > 0)
            {
                highlightLayer.InternalFeatures.Add(features[0]);
                PopupOverlay overlay = Map1.Overlays["POPUP"] as PopupOverlay;
                overlay.Popups.Clear();
                overlay.Popups.Add(new Popup(e.WorldLocation) { Content = features[0].ColumnValues["CNTRY_NAME"] });
                Map1.Refresh();
            }

        }