BasicCensusMap.MainPage.MainPage C# (CSharp) Метод

        public MainPage()
        {
            InitializeComponent();

            //ESRI.ArcGIS.Client.Geometry.Envelope initialExtent =
            // new ESRI.ArcGIS.Client.Geometry.Envelope(-13205480.536, 4077189.785, -13176602.592, 4090421.641);

            //MyMap.Extent = initialExtent;

            _candidateGraphicsLayer = MyMap.Layers["CandidateGraphicsLayer"] as GraphicsLayer;
            arcgisLayer = MyMap.Layers["CensusLayer"] as ArcGISTiledMapServiceLayer;

            LoadComboBoxData();
        }