private void DisplayMap_Load(object sender, EventArgs e)
        {
            winformsMap1.MapUnit = GeographyUnit.DecimalDegree;
            winformsMap1.BackgroundOverlay.BackgroundBrush = new GeoSolidBrush(GeoColor.GeographicColors.ShallowOcean);

            WorldMapKitWmsDesktopOverlay wmsOverlay = new WorldMapKitWmsDesktopOverlay();
            winformsMap1.Overlays.Add(wmsOverlay);
            LayerOverlay overLay = new LayerOverlay();
            inmLayer = new InMemoryFeatureLayer();
            inmLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.Capital1;
            inmLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

            Random random = new Random();
            for (int i = 0; i < 11000; i++)
            {
                inmLayer.InternalFeatures.Add(new Feature(random.Next(-180, 180), random.Next(-180, 180)));
            }

            overLay.Layers.Add(inmLayer);
            winformsMap1.Overlays.Add(overLay);

            winformsMap1.CurrentExtent = new RectangleShape(-139.2, 92.4, 120.9, -93.2);
            winformsMap1.Refresh();
            winformsMap1.MouseHover += new EventHandler(winformsMap1_MouseHover);
        }
        InMemoryFeatureLayer inmLayer;
        int counter = 0;
        void winformsMap1_MouseHover(object sender, EventArgs e)
        {
            if (counter==0)
            {
                inmLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.City3;
                counter = 1;
            }
            else
            {
                inmLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.Capital1;
                counter = 0;
            }
            winformsMap1.Refresh();
        }