ArcGISWindowsPhoneSDK.GeometryJSON.DrawGeometryButton_Click C# (CSharp) Метод

        private void DrawGeometryButton_Click(object sender, RoutedEventArgs e)
        {
            ClearGraphicsLayers();
            OutJsonTextBox.Text = "";

            switch ((sender as Button).Tag as string)
            {
                case "DrawPoint":
                    _myDrawObject.DrawMode = DrawMode.Point;
                    break;
                case "DrawPolyline":
                    _myDrawObject.DrawMode = DrawMode.Polyline;
                    break;
                case "DrawPolygon":
                    _myDrawObject.DrawMode = DrawMode.Polygon;
                    break;
                case "DrawRectangle":
                    _myDrawObject.DrawMode = DrawMode.Rectangle;
                    break;
                default:
                    _myDrawObject.DrawMode = DrawMode.None;
                    ClearGraphicsLayers();
                    break;
            }
            _myDrawObject.IsEnabled = (_myDrawObject.DrawMode != DrawMode.None);
        }