private void CreateTileLayerCollection()
        {
            _tileLayers = new TileLayerCollection();
            _tileLayers.Add(new KFlyTileLayer()
            {
                Icon = new BitmapImage(new Uri("../../Resources/OpenStreetMap-logo.jpg", UriKind.Relative)),
                SourceName = "OpenStreetMap",
                Description = "© {y} OpenStreetMap Contributors, CC-BY-SA",
                TileSource = new TileSource("http://{c}.tile.openstreetmap.org/{z}/{x}/{y}.png")
            });
            _tileLayers.Add(new KFlyTileLayer()
            {
                Icon = new BitmapImage(new Uri("../../Resources/OpenCycleMap_icon.png", UriKind.Relative)),
                IsAvailable = true,
                SourceName = "OpenCycleMap",
                Description = "OpenCycleMap - © {y} Andy Allen & OpenStreetMap Contributors, CC-BY-SA",
                TileSource = new TileSource("http://{c}.tile.opencyclemap.org/cycle/{z}/{x}/{y}.png")
            });
             /*    _tileLayers.Add(new KFlyTileLayer()
            {
                Icon = new BitmapImage(new Uri("../../Resources/OpenCycleMap-icon.png", UriKind.Relative)),
                SourceName = "OCM Landscape",
                Description = "OpenCycleMap Landscape - © {y} Andy Allen & OpenStreetMap Contributors, CC-BY-SA",
                TileSource = new TileSource("http://{c}.tile3.opencyclemap.org/landscape/{z}/{x}/{y}.png")
            });
             _tileLayers.Add(new KFlyTileLayer()
            {
                Icon = new BitmapImage(new Uri("../../Resources/OpenCycleMap-icon.png", UriKind.Relative)),
                SourceName = "OCM Transport",
                Description = "OpenCycleMap Transport - © {y} Andy Allen & OpenStreetMap Contributors, CC-BY-SA",
                TileSource = new TileSource("http://{c}.tile2.opencyclemap.org/transport/{z}/{x}/{y}.png")
            });*/
             _tileLayers.Add(new KFlyTileLayer()
            {
                Icon = new BitmapImage(new Uri("../../Resources/MapQuest_icon.png", UriKind.Relative)),
                SourceName = "MapQuest OSM",
                Description = "MapQuest OSM - © {y} MapQuest & OpenStreetMap Contributors",
                TileSource = new TileSource("http://otile{n}.mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.png")
            });

            // Following only for demo, not available
               /*  _tileLayers.Add(new KFlyTileLayer()
            {
                IsAvailable = false,
                SourceName = "Google Maps",
                Description = "Google Maps - © {y} Google",
                TileSource = new TileSource("http://mt{i}.google.com/vt/x={x}&y={y}&z={z}"),
                MaxZoomLevel = 20
            });
             _tileLayers.Add(new KFlyTileLayer()
            {
                IsAvailable = false,
                SourceName = "Google Images",
                Description = "Google Maps - © {y} Google",
                Background = Brushes.LightGray,
                Foreground = Brushes.White,
                TileSource = new TileSource("http://khm{i}.google.com/kh/v=144&x={x}&y={y}&z={z}"),
                MaxZoomLevel = 20
            });*/
             _tileLayers.Add(new KFlyTileLayer()
            {
                IsAvailable = false,
                Icon = new BitmapImage(new Uri("../../Resources/BingMaps_icon.png", UriKind.Relative)),
                SourceName = "Bing Maps",
                Description = "Bing Maps - © {y} Microsoft Corporation",
                Background = Brushes.LightGray,
                Foreground = Brushes.White,
                TileSource = new TileSource("http://ecn.t{i}.tiles.virtualearth.net/tiles/r{q}.png?g=0&stl=h"),
                MinZoomLevel = 1,
                MaxZoomLevel = 19
            });
             _tileLayers.Add(new KFlyTileLayer()
            {
                IsAvailable = false,
                Icon = new BitmapImage(new Uri("../../Resources/BingMaps_icon.png", UriKind.Relative)),
                SourceName = "Bing Images",
                Description = "Bing Maps - © {y} Microsoft Corporation",
                Background = Brushes.LightGray,
                Foreground = Brushes.White,
                TileSource = new TileSource("http://ecn.t{i}.tiles.virtualearth.net/tiles/a{q}.jpeg?g=0"),
                MinZoomLevel = 1,
                MaxZoomLevel = 19
            });
             _tileLayers.Add(new KFlyTileLayer()
            {
                IsAvailable = false,
                Icon = new BitmapImage(new Uri("../../Resources/BingMaps_icon.png", UriKind.Relative)),
                SourceName = "Bing Hybrid",
                Description = "Bing Maps - © {y} Microsoft Corporation",
                Background = Brushes.LightGray,
                Foreground = Brushes.White,
                TileSource = new TileSource("http://ecn.t{i}.tiles.virtualearth.net/tiles/h{q}.jpeg?g=0&stl=h"),
                MinZoomLevel = 1,
                MaxZoomLevel = 19
            });
        }