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FeatureCollectionLayerFromQuery.xaml.cs
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FeatureCollectionLayerFromQuery.xaml.cs
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// Copyright 2016 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.Data;
using Esri.ArcGISRuntime.Mapping;
using System;
using Windows.UI.Popups;
namespace ArcGISRuntime.UWP.Samples.FeatureCollectionLayerFromQuery
{
public partial class FeatureCollectionLayerFromQuery
{
private const string FeatureLayerUrl = "http://sampleserver6.arcgisonline.com/arcgis/rest/services/Wildfire/FeatureServer/0";
public FeatureCollectionLayerFromQuery()
{
InitializeComponent();
// Create the UI, setup the control references and execute initialization
Initialize();
}
private void Initialize()
{
try
{
// Create a new map with the oceans basemap and add it to the map view
var map = new Map(Basemap.CreateOceans());
MyMapView.Map = map;
// Call a function that will create a new feature collection layer from a service query
GetFeaturesFromQuery();
}
catch (Exception ex)
{
var messageDlg = new MessageDialog("Unable to create feature collection layer: " + ex.Message, "Error");
messageDlg.ShowAsync();
}
}
private async void GetFeaturesFromQuery()
{
// Create a service feature table to get features from
var featTable = new ServiceFeatureTable(new Uri(FeatureLayerUrl));
// Create a query to get all features in the table
var queryParams = new QueryParameters();
queryParams.WhereClause = "1=1";
// Query the table to get all features
var featureResult = await featTable.QueryFeaturesAsync(queryParams);
// Create a new feature collection table from the result features
var collectTable = new FeatureCollectionTable(featureResult);
// Create a feature collection and add the table
var featCollection = new FeatureCollection();
featCollection.Tables.Add(collectTable);
// Create a layer to display the feature collection, add it to the map's operational layers
var featCollectionTable = new FeatureCollectionLayer(featCollection);
MyMapView.Map.OperationalLayers.Add(featCollectionTable);
}
}
}