arcgis runtime for .net 100.6怎么加载本地SHP文件

  private async void StartLocalMapService(string filename, string path)

        {

            // Start a service from the blank MPK

            string mapServiceUrl = GetMpkPath();



            // Create the local map service

            _localMapService = new LocalMapService(mapServiceUrl);



            // Create the shapefile workspace

            ShapefileWorkspace shapefileWorkspace = new ShapefileWorkspace("shp_wkspc", path);



            // Create the layer source that represents the shapefile on disk

            TableSublayerSource source = new TableSublayerSource(shapefileWorkspace.Id, filename);



            // Create a sublayer instance from the table source

            _shapefileSublayer = new ArcGISMapImageSublayer(0, source);



            // Add the dynamic workspace to the map service

            _localMapService.SetDynamicWorkspaces(new List<DynamicWorkspace>() { shapefileWorkspace });



            // Subscribe to notifications about service status changes

            _localMapService.StatusChanged += _localMapService_StatusChanged;



            try

            {

                // Start the map service

                await _localMapService.StartAsync();

            }

            catch (Exception e)

            {

                MessageBox.Show(e.ToString(), "Error");

            }

        }



        private async void _localMapService_StatusChanged(object sender, StatusChangedEventArgs e)

        {

            // Add the shapefile layer to the map once the service finishes starting

            if (e.Status == LocalServerStatus.Started)

            {

                // Create the imagery layer

                ArcGISMapImageLayer imageryLayer = new ArcGISMapImageLayer(_localMapService.Url);



                // Subscribe to image layer load status change events

                // Only set up the sublayer renderer for the shapefile after the parent layer has finished loading

                imageryLayer.LoadStatusChanged += (q, ex) =>

                {

                    // Add the layer to the map once loaded

                    if (ex.Status == Esri.ArcGISRuntime.LoadStatus.Loaded)

                    {

                        // Create a default symbol style

                        SimpleLineSymbol lineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, Color.Red, 3);



                        // Apply the symbol style with a renderer

                        _shapefileSublayer.Renderer = new SimpleRenderer(lineSymbol);



                        // Add the shapefile sublayer to the imagery layer

                        imageryLayer.Sublayers.Add(_shapefileSublayer)

                        //按官网案例源码来，运行后加载SHP后没反应，注释掉能加载MPK。

                    }

                };



                try

                {

                    // Load the layer

                    await imageryLayer.LoadAsync();



                    // Clear any existing layers

                    MyMapView.Map.OperationalLayers.Clear();



                    // Add the image layer to the map

                    MyMapView.Map.OperationalLayers.Add(imageryLayer);

                }

                catch (Exception ex)

                {

                    MessageBox.Show(ex.ToString(), "Error");

                }

            }

        }