Map map = new Map("Map1",
               new System.Web.UI.WebControls.Unit(100, System.Web.UI.WebControls.UnitType.Percentage),
               new System.Web.UI.WebControls.Unit(100, System.Web.UI.WebControls.UnitType.Percentage));
            map.MapUnit = GeographyUnit.Meter;
            map.CurrentExtent = new RectangleShape(-13939426.6371, 6701997.4056, -7812401.86, 2626987.386962);
            map.CenterAt(new PointShape(0, 0));
            map.CurrentScale = 2000;

            //map.CustomOverlays.Add(new BingMapsOverlay("Bing"));

            ZoomLevelSet mapZoomlevelSet = new ZoomLevelSet();

            ZoomLevelSet bingZoomlevel = new BingMapsZoomLevelSet();
            foreach (var item in bingZoomlevel.GetZoomLevels())
            {
                item.DefaultPointStyle = PointStyles.Capital1;
                mapZoomlevelSet.CustomZoomLevels.Add(item);
            }
            mapZoomlevelSet.CustomZoomLevels.Add(new ZoomLevel(500));
            mapZoomlevelSet.CustomZoomLevels.Add(new ZoomLevel(250));
            mapZoomlevelSet.CustomZoomLevels.Add(new ZoomLevel(125));
            map.ZoomLevelSet = mapZoomlevelSet;

            InMemoryFeatureLayer layer = new InMemoryFeatureLayer();
            foreach (var item in mapZoomlevelSet.GetZoomLevels())
            {
                item.DefaultPointStyle = PointStyles.City1;
                layer.ZoomLevelSet.CustomZoomLevels.Add(item);
            }
            layer.InternalFeatures.Add(new Feature(new PointShape(0, 0)));
            
            LayerOverlay overlay = new LayerOverlay();
            overlay.Layers.Add(new BingMapsLayer("AlQlrQl49rquql99KC_4djncSwTag7ZGFl_xmicy5cbqqSbr7O-nRLHekVI8s_a1"));
            overlay.Layers.Add(layer);
            map.CustomOverlays.Add(overlay);