/// <summary>
/// Requests for features whose attributes will be displayed in <see cref="UI.FeatureDataField"/>
/// </summary>
/// <returns>A task that represents the asynchronous loading of features. </returns>
private async Task LoadFeaturesAsync()
{
string error = null;
try
{
var table = new ServiceFeatureTable(new Uri("http://sampleserver6.arcgisonline.com/arcgis/rest/services/DamageAssessmentStatePlane/FeatureServer/0"));
table.FeatureRequestMode = FeatureRequestMode.ManualCache;
await table.LoadAsync();
var queryParameters = new QueryParameters()
{
WhereClause = "incidentid <> ''",
MaxFeatures = 100
};
// Request for the same fields defined in the ListView.ItemTemplate.
var outFields = new string[] { "objectid", "incidentid", "typdamage", "habitable", "predisval", "inspdate", "lastupdate" };
var features = await table.PopulateFromServiceAsync(queryParameters, true, outFields);
grid.ItemsSource = features.ToList();
}
catch (Exception exception)
{
error = exception.Message;
}
if (!string.IsNullOrEmpty(error))
{
await new MessageDialog($"Error occured : {error}", "Sample error").ShowAsync();
}
}
private async void OnLoadedPopulateData(object sender, Esri.ArcGISRuntime.LoadStatusEventArgs e)
{
// If layer isn't loaded, do nothing
if (e.Status != Esri.ArcGISRuntime.LoadStatus.Loaded)
{
return;
}
// Create new query object that contains parameters to query specific request types
QueryParameters queryParameters = new QueryParameters()
{
WhereClause = "req_Type = 'Tree Maintenance or Damage'"
};
// Create list of the fields that are returned from the service
string[] outputFields = { "*" };
try
{
// Populate feature table with the data based on query
await _incidentsFeatureTable.PopulateFromServiceAsync(queryParameters, true, outputFields);
}
catch (Exception ex)
{
await Application.Current.MainPage.DisplayAlert("Error", ex.ToString(), "OK");
}
}
private async void OnLoadedPopulateData(object sender, LoadStatusEventArgs e)
{
// If layer isn't loaded, do nothing
if (e.Status != LoadStatus.Loaded)
{
return;
}
// Create new query object that contains a basic 'include everything' clause
QueryParameters queryParameters = new QueryParameters()
{
WhereClause = "1=1"
};
// Create a new time extent that covers the desired interval (beginning of time to September 16th, 2000)
TimeExtent myExtent = new TimeExtent(new DateTime(1, 1, 1), new DateTime(2000, 9, 16));
// Apply the time extent to the query parameters
queryParameters.TimeExtent = myExtent;
// Create list of the fields that are returned from the service
string[] outputFields = { "*" };
try
{
// Populate feature table with the data based on query
await _myFeatureTable.PopulateFromServiceAsync(queryParameters, true, outputFields);
}
catch (Exception ex)
{
await((Page)Parent).DisplayAlert("Error", ex.ToString(), "OK");
}
}
private async void OnLoadedPopulateData(object sender, EventArgs e)
{
// Unsubscribe from events.
_myFeatureTable.Loaded -= OnLoadedPopulateData;
// Create new query object that contains a basic 'include everything' clause.
QueryParameters queryParameters = new QueryParameters
{
WhereClause = "1=1",
// Restrict query with a time extent that covers the desired interval (beginning of time to September 16th, 2000).
TimeExtent = new TimeExtent(new DateTime(1, 1, 1), new DateTime(2000, 9, 16))
};
// Create list of the fields that are returned from the service.
string[] outputFields = { "*" };
try
{
// Populate feature table with the data based on query.
await _myFeatureTable.PopulateFromServiceAsync(queryParameters, true, outputFields);
}
catch (Exception ex)
{
new UIAlertView("Error", ex.ToString(), (IUIAlertViewDelegate)null, "OK", null).Show();
}
}
private async Task QueryAllCountryFeaturesAsync()
{
// Query all the country features
var parameters = new QueryParameters();
parameters.WhereClause = @"1=1";
parameters.ReturnGeometry = true;
//var queryResult = await _countryTable.QueryFeaturesAsync(parameters, QueryFeatureFields.LoadAll);
var outFields = new[] { @"*" };
var queryResult = await _countryTable.PopulateFromServiceAsync(parameters, true, outFields);
foreach (var countryFeature in queryResult)
{
var countryAttributes = new Dictionary <string, object>(countryFeature.Attributes);
countryAttributes.Add(@"HitCount", 0L);
var countryGraphic = new Graphic(countryFeature.Geometry, countryAttributes);
countryGraphic.IsVisible = false;
_countryOverlay.Graphics.Add(countryGraphic);
const string countryFieldName = @"COUNTRY";
if (countryAttributes.ContainsKey(@"FID") && countryAttributes.ContainsKey(countryFieldName))
{
var fid = countryAttributes[@"FID"].ToString();
var countryName = countryAttributes[countryFieldName].ToString();
_countries.Add(fid, new CountryEntry {
Name = countryName, HitCount = 0L
});
}
}
}
private async void Initialize()
{
// Web マップの URL を指定してマップを作成
var webMap = await Map.LoadFromUriAsync(new Uri("https://arcgis.com/home/item.html?id=9a6a1c9f857a4a68a6e405bb5917e620"));
// マップビューのマップに設定
MyMapView.Map = webMap;
//住所検索用のジオコーディング タスクを初期化
onlineLocatorTask = await LocatorTask.CreateAsync(new Uri(WORLD_GEOCODE_SERVICE_URL));
// グラフィックス オーバーレイの新規追加
geocodeResultGraphicsOverlay = new GraphicsOverlay()
{
Renderer = createGeocoordingSymbol(),
};
MyMapView.GraphicsOverlays.Add(geocodeResultGraphicsOverlay);
isMapReady = true;
// マップがロードされた際の処理
if (MyMapView.Map.LoadStatus == LoadStatus.Loaded)
{
// マップビューのタップ イベントを登録
MyMapView.GeoViewTapped += OnMapViewTapped;
// Web マップに含まれる最上位のレイヤーを取得
myFeatureLayer = (FeatureLayer)MyMapView.Map.OperationalLayers[1];
// フィーチャ レイヤからフィーチャ テーブルを定義
myFeatureTable = (ServiceFeatureTable)myFeatureLayer.FeatureTable;
// リクエスト モードの設定
myFeatureTable.FeatureRequestMode = FeatureRequestMode.ManualCache;
// フィーチャの検索用のパラメーターを作成
var queryParams = new QueryParameters();
// すべてのフィーチャを取得するように条件を設定
queryParams.WhereClause = "1=1";
// 検索結果にフィーチャのすべての属性情報（outFields の配列に "*" を指定）を含める
var outputFields = new string[] { "*" };
// クエリの条件に基づいてフィーチャ テーブルにデータを設定する
await myFeatureTable.PopulateFromServiceAsync(queryParams, true, outputFields);
// マップビューにグラフィック表示用のオーバレイを追加
MyMapView.GraphicsOverlays.Add(myGraphicsOverlay);
}
}
private async void OnLoadedPopulateData(object sender, Esri.ArcGISRuntime.LoadStatusEventArgs e)
{
// If layer isn't loaded, do nothing
if (e.Status != Esri.ArcGISRuntime.LoadStatus.Loaded)
{
return;
}
// Create new query object that contains parameters to query specific request types
QueryParameters queryParameters = new QueryParameters()
{
WhereClause = "req_Type = 'Tree Maintenance or Damage'"
};
// Create list of the fields that are returned from the service
var outputFields = new string[] { "*" };
// Populate feature table with the data based on query
await _incidentsFeatureTable.PopulateFromServiceAsync(queryParameters, true, outputFields);
}
private async void OnLoadedPopulateData(object sender, LoadStatusEventArgs e)
{
// If layer isn't loaded, do nothing.
if (e.Status != LoadStatus.Loaded)
{
return;
}
// Create new query object that contains a basic 'include everything' clause.
QueryParameters queryParameters = new QueryParameters
{
WhereClause = "1=1",
// Restrict query with a time extent that covers the desired interval (beginning of time to September 16th, 2000).
TimeExtent = new TimeExtent(new DateTime(1, 1, 1), new DateTime(2000, 9, 16))
};
// Create list of the fields that are returned from the service.
string[] outputFields = { "*" };
// Populate feature table with the data based on query.
await _myFeatureTable.PopulateFromServiceAsync(queryParameters, true, outputFields);
}
private async void OnLoadedPopulateData(object sender, EventArgs e)
{
// Unsubscribe from event.
_incidentsFeatureTable.Loaded -= OnLoadedPopulateData;
// Create new query object that contains parameters to query specific request types.
QueryParameters queryParameters = new QueryParameters
{
WhereClause = "req_Type = 'Tree Maintenance or Damage'"
};
// Create list of the fields that are returned from the service.
string[] outputFields = { "*" };
try
{
// Populate feature table with the data based on query.
await _incidentsFeatureTable.PopulateFromServiceAsync(queryParameters, true, outputFields);
}
catch (Exception ex)
{
new UIAlertView("Error", ex.ToString(), (IUIAlertViewDelegate)null, "OK", null).Show();
}
}