protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                Map1.MapUnit = GeographyUnit.Meter;
                Map1.CurrentExtent = new RectangleShape(-700000, 6557681, 1251120, 4909089);
                Map1.MapTools.Logo.Enabled = false;
                Map1.MapBackground.BackgroundBrush = new GeoSolidBrush(GeoColor.GeographicColors.ShallowOcean);
                Map1.MapTools.OverlaySwitcher.Enabled = true;
                Map1.MapTools.OverlaySwitcher.BackgroundColor = new GeoColor(50, GeoColor.StandardColors.White);
                Map1.MapTools.OverlaySwitcher.RoundedCornerColor = new GeoColor(50, GeoColor.StandardColors.White);
                Map1.MapTools.OverlaySwitcher.BaseOverlayTitle = "Choix du fond de carte:";
                Map1.MapTools.OverlaySwitcher.DynamicOverlayTitle = "<br />Affichage des calques:";

                LayerOverlay emptyLayerOverlay = new LayerOverlay("emptyLayerOverlay");
                emptyLayerOverlay.Name = "Aucun";
                emptyLayerOverlay.IsBaseOverlay = true;
                emptyLayerOverlay.SetBaseEpsgProjection("EPSG:900913"); // Spherical Mercator
                Map1.CustomOverlays.Add(emptyLayerOverlay);


                GoogleOverlay googleMapsOverlay = new GoogleOverlay("googleMapsOverlay");
                googleMapsOverlay.Name = "Google Maps";
                googleMapsOverlay.GoogleMapType = GoogleMapType.Hybrid;
                googleMapsOverlay.IsBaseOverlay = true;
                Map1.CustomOverlays.Add(googleMapsOverlay);



                Key = "your key"
                username = "user name";
                password = "PWD";

                string layerID = "CP.CadastralParcel";
                string layerCRS = "EPSG:2154";

                Uri IGNuri = new Uri("base url" + Key + "/inspire/r/wms");

                string layerName = "Cadastre";
                float layerOpacity = 0.5F;
                bool layerIsBaseOverlay = false;

                LayerOverlay IGNLayerOverlay = new LayerOverlay("IGN_" + layerID, layerIsBaseOverlay, TileType.SingleTile);
                IGNLayerOverlay.Name = layerName;
                IGNLayerOverlay.Opacity = layerOpacity;
                IGNLayerOverlay.IsVisible = true;

                WmsRasterLayer IGNWmsRasterLayer = new WmsRasterLayer(IGNuri);
                ((WmsRasterSource)IGNWmsRasterLayer.ImageSource).SendingWebRequest += new EventHandler<SendingWebRequestEventArgs>(IGNWmsRasterLayer_SendingRequest);
                IGNWmsRasterLayer.Crs = layerCRS;
                IGNWmsRasterLayer.Parameters.Add("SERVICE", "WMS");
                IGNWmsRasterLayer.Parameters.Add("LAYERS", layerID);
                IGNWmsRasterLayer.Parameters.Add("STYLES", "inspire_common:DEFAULT");
                IGNWmsRasterLayer.Parameters.Add("FORMAT", "image/png");
                IGNWmsRasterLayer.Parameters.Add("WIDTH", "256");
                IGNWmsRasterLayer.Parameters.Add("HEIGHT", "256");
                IGNWmsRasterLayer.Parameters.Add("CRS", layerCRS);
                IGNWmsRasterLayer.Parameters.Add("VERSION", "1.3.0");

                IGNWmsRasterLayer.ImageSource.Open();
                foreach (string name in IGNWmsRasterLayer.GetServerLayerNames())
                { IGNWmsRasterLayer.ActiveLayerNames.Add(name); }
                IGNWmsRasterLayer.ImageSource.Close();

                Proj4Projection proj = new Proj4Projection();
                proj.InternalProjectionParametersString = Proj4Projection.GetEpsgParametersString(2154);
                proj.ExternalProjectionParametersString = Proj4Projection.GetGoogleMapParametersString();
                proj.Open();
                (IGNWmsRasterLayer.ImageSource as WmsRasterSource).Projection = proj;

                IGNLayerOverlay.Layers.Add(IGNWmsRasterLayer);
                Map1.CustomOverlays.Add(IGNLayerOverlay);
            }
        }

        protected void IGNWmsRasterLayer_SendingRequest(object sender, SendingWebRequestEventArgs e)
        {
            string url = e.WebRequest.RequestUri.OriginalString.Replace("http://", "https://");
            e.WebRequest = WebRequest.Create(new Uri(url));
            e.WebRequest.Credentials = new NetworkCredential(username, password);
        }