Why was the DynamicWorkspaceShapefile sample removed?
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02-05-2024 10:29 PM
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Hi @HamishDuff , thank you for answering. Basically, I'm unable to display the shapefile when I use Local Server and ShapeFileWorkspace though I was able to display it using ShapefileFeatureTable . Here's an screenshot of my test app after selecting the subdivision.shp file. I actually copied the code from the DynamicWOrkspaceShapeFile sample. I'm also wondering why this sample was removed from the main branch of the git repo.
Here is my code.
// Copyright 2017 Esri.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
// You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
// language governing permissions and limitations under the License.
using Esri.ArcGISRuntime.LocalServices;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.Symbology;
using System;
using System.Collections.Generic;
using System.IO;
using System.Windows;
using System.Drawing;
using Esri.ArcGISRuntime.Data;
namespace ArcGisLocal
{
public partial class DynamicWorkspaceShapefile
{
// Hold a reference to the local map service
private LocalMapService _localMapService;
// Hold a reference to the layer that will display the shapefile data
private ArcGISMapImageSublayer _shapefileSublayer;
public DynamicWorkspaceShapefile()
{
InitializeComponent();
Esri.ArcGISRuntime.ArcGISRuntimeEnvironment.ApiKey = "MY_API_KEY";
// Create the UI, setup the control references and execute initialization
Initialize();
}
private async void Initialize()
{
// Create a map and add it to the view
MyMapView.Map = new Map(BasemapStyle.ArcGISStreets);
try
{
// LocalServer must not be running when setting the data path.
if (LocalServer.Instance.Status == LocalServerStatus.Started)
{
await LocalServer.Instance.StopAsync();
}
// Set the local data path - must be done before starting. On most systems, this will be C:\EsriSamples\AppData.
// This path should be kept short to avoid Windows path length limitations.
string tempDataPathRoot = Directory.GetParent(Environment.GetFolderPath(Environment.SpecialFolder.Windows)).FullName;
string tempDataPath = Path.Combine(tempDataPathRoot, "EsriSamples", "AppData");
Directory.CreateDirectory(tempDataPath); // CreateDirectory won't overwrite if it already exists.
LocalServer.Instance.AppDataPath = tempDataPath;
// Start the local server instance
await LocalServer.Instance.StartAsync();
// Load the sample data
LoadShapefilePaths();
// Enable the 'choose shapefile' button
MyChooseButton.IsEnabled = true;
}
catch (InvalidOperationException ex)
{
MessageBox.Show(String.Format("Please ensure that local server is installed prior to using the sample. See instructions in readme.md. Message: {0}", ex.Message), "Local Server failed to start");
}
}
private async void StartLocalMapService(string filename, string path)
{
#region Using ShapefileFeatureTable
// Open the shapefile
//ShapefileFeatureTable myShapefile = await ShapefileFeatureTable.OpenAsync(Path.Combine(path, filename));
//// Create a feature layer to display the shapefile
//FeatureLayer newFeatureLayer = new FeatureLayer(myShapefile);
//await newFeatureLayer.LoadAsync();
//MyMapView.Map.OperationalLayers.Clear();
//// Zoom the map to the extent of the shapefile
//MyMapView.SetViewpoint(new Viewpoint(newFeatureLayer.FullExtent));
//// Add the layer to the map
//MyMapView.Map.OperationalLayers.Add(newFeatureLayer);
#endregion
#region Using Local Server
// 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");
}
#endregion
}
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);
}
};
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");
}
}
}
private static string GetMpkPath()
{
// Gets the path to the blank map package
return @"D:\Repos\playground\wpfapp1\ArcGisLocal\mpks\blankMap.mpkx";
}
private static string LoadShapefilePaths()
{
// Gets the path to the shapefile package
return @"D:\Repos\playground\wpfapp1\ArcGisLocal\shapefiles";
}
private void MyChooseButton_Click(object sender, RoutedEventArgs e)
{
// Allow the user to specify a file path - create the dialog
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog()
{
DefaultExt = ".shp",
Filter = "Shapefiles|*.shp",
InitialDirectory = Path.GetDirectoryName(LoadShapefilePaths())
};
// Show the dialog and get the results
bool? result = dlg.ShowDialog();
// Take action if the user selected a file
if (result == true)
{
string filename = Path.GetFileName(dlg.FileName);
string path = Path.GetDirectoryName(dlg.FileName);
StartLocalMapService(filename, path);
}
}
}
}
