ArcGISWindowsPhoneSDK.AreaAndLengths.MyDrawObject_DrawComplete C# (CSharp) Method

        private void MyDrawObject_DrawComplete(object sender, DrawEventArgs args)
        {
            MyDrawObject.IsEnabled = false;
            ESRI.ArcGIS.Client.Geometry.Polygon polygon = args.Geometry as ESRI.ArcGIS.Client.Geometry.Polygon;
            polygon.SpatialReference = MyMap.SpatialReference;
            Graphic graphic = new Graphic()
            {
                Symbol = LayoutRoot.Resources["DefaultFillSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol,
                Geometry = polygon,
            };

            GeometryService geometryService =
                new GeometryService("http://serverapps101.esri.com/arcgis/rest/services/Geometry/GeometryServer");
            geometryService.AreasAndLengthsCompleted += GeometryService_AreasAndLengthsCompleted;
            geometryService.Failed += GeometryService_Failed;

            GraphicsLayer graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
            graphicsLayer.Graphics.Add(graphic);

            List<Graphic> graphicList = new List<Graphic>();
            graphicList.Add(graphic);

            // Since there are multiple overloads for AreasAndLengthsAsync, make sure to use appropriate signature with correct parameter types.
            geometryService.AreasAndLengthsAsync(graphicList, null, null, (CalculationType)CalcTypeListBox.SelectedValue);

            // GeometryService.AreasAndLengths returns distances and areas in the units of the spatial reference.
            // The units in the map view's projection is decimal degrees.
            // Use the Project method to convert graphic points to a projection that uses a measured unit (e.g. meters).
            // If the map units are in measured units, the call to Project is unnecessary.
            // Important: Use a projection appropriate for your area of interest.
        }