protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                Map1.MapBackground.BackgroundBrush = new GeoSolidBrush(GeoColor.FromHtml("#E5E3DF"));
                Map1.CurrentExtent = new RectangleShape(-131.22, 55.05, -54.03, 16.91);
                Map1.MapUnit = GeographyUnit.DecimalDegree;

                WorldMapKitWmsWebOverlay worldMapKitOverlay = new WorldMapKitWmsWebOverlay();
                Map1.CustomOverlays.Add(worldMapKitOverlay);

                ContextMenu menuOnEventLayer = new ContextMenu("area", 200);
                ContextMenuItem menu2 = new ContextMenuItem("click me");
                menu2.Click += new EventHandler<ContextMenuItemClickEventArgs>(menu2_Click);
                menuOnEventLayer.MenuItems.Add(menu2);

                Feature feature = new Feature(new RectangleShape(-110.22, 50, -80.03, 30));
                Map1.HighlightOverlay.Features.Add("multipolygon", feature);
                Map1.HighlightOverlay.ContextMenu = menuOnEventLayer;
                Map1.HighlightOverlay.HighlightStyle = new FeatureOverlayStyle(GeoColor.SimpleColors.LightOrange, GeoColor.SimpleColors.Green, 1);
            }
        }

        void menu2_Click(object sender, ContextMenuItemClickEventArgs e)
        {
                Map1.HighlightOverlay.Style = new FeatureOverlayStyle(GeoColor.SimpleColors.LightRed, GeoColor.SimpleColors.Green, 1);
        }