ArcGIS Pro二次开发添加网络图层

  protected override void OnClick()
        {
            AddLayerToMap();

        }
        private async Task AddLayerToMap()
        {
            try
            {
                // Get the first map called "Map" from the current project.
                Map myMap = null;
                myMap = await GetMapFromProject(Project.Current, "Map");
                if (myMap == null)
                {
                    ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show("Failed to get map.");
                    return;
                }


                // Create a url pointing to the source. In this case it is a url to an image service 
                // which will result in an image service layer being created.
                string dataSoureUrl = @"https://services7.arcgis.com/       /arcgis/rest/services/地图/FeatureServer";
                // Note: A url can also point to  
                // 1.) An image on disk or an in a file geodatabase. e.g. string dataSoureUrl = @"C:	empa.tif"; This results in a raster layer.
                // 2.) A mosaic dataset in a file gdb e.g. string dataSoureUrl = @"c:	empmygdb.gdbMyMosaicDataset"; This results in a mosaic layer.
                // 3.) A raster or mosaic dataset in an enterprise geodatabase.

                // Create an ImageServiceLayer object to hold the new layer.
                Layer layer1 = null;

                // The layer has to be created on the Main CIM Thread (MCT).
                await QueuedTask.Run(() =>
                {
                    // Create a layer based on the url. In this case the layer we are creating is an image service layer.
                    layer1 = (Layer)LayerFactory.Instance.CreateLayer(new Uri(dataSoureUrl), myMap);

                    // Check if it is created.
                    if (layer1 == null)
                    {
                        ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show("Failed to create layer for url:" + dataSoureUrl);
                        return;
                    }

                   
                });
            }
            catch (Exception exc)
            {
                // Catch any exception found and display a message box.
                ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show("Exception caught: " + exc.Message);
                return;
            }
        }

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  /// <summary>
        /// Gets the map from a project that matches a map name.
        /// </summary>
        /// <param name="project">The project in which the map resides.</param>
        /// <param name="mapName">The map name to identify the map.</param>
        /// <returns>A Task representing the map.</returns>
        private Task<Map> GetMapFromProject(Project project, string mapName)
        {
            // Return null if either of the two parameters are invalid.
            if (project == null || string.IsNullOrEmpty(mapName))
                return null;

            // Find the first project item with name matches with mapName
            MapProjectItem mapProjItem =
                project.GetItems<MapProjectItem>().FirstOrDefault(item => item.Name.Equals(mapName, StringComparison.CurrentCultureIgnoreCase));

            if (mapProjItem != null)
                return QueuedTask.Run<Map>(() => { return mapProjItem.GetMap(); }, Progressor.None);
            else
                return null;
        }