topic Re: Identify features also support FeatureCollectionLayer in .NET Maps SDK Questions

Identify features also support FeatureCollectionLayer

TakahiroKAMIYA — Sat, 11 Dec 2021 23:12:07 GMT

Does IdentifyLayerAsync Method also support FeatureCollectionLayer?

https://developers.arcgis.com/net/latest/forms/guide/identify-features.htm

https://developers.arcgis.com/net/latest/ios/api-reference//html/T_Esri_ArcGISRuntime_Mapping_FeatureCollectionLayer.htm

The GeoElement list is empty.

var layer = MyMapView.Map.OperationalLayers[0];
var pixelTolerance = 20;
var returnPopupsOnly = true;
var maxResults = 1;

var idResults = await MyMapView.IdentifyLayerAsync(layer, e.Position, pixelTolerance, returnPopupsOnly, maxResults);

foreach (GeoElement idElement in idResults.GeoElements)
{
     Feature idFeature = idElement as Feature;
     //idLayer.SelectFeature(idFeature);
}

FeatureCollectionLayer idLayer = idResults.LayerContent as FeatureCollectionLayer;

FeatureCollectionTable tables = (idLayer.FeatureCollection.Tables).FirstOrDefault();

var fields = tables.LayerInfo.Fields;‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Identify features also support FeatureCollectionLayer

dotMorten_esri — Mon, 11 Dec 2017 17:49:24 GMT

The FeatureCollectionLayer is a group layer of FeatureLayers, so instead parse in the layers inside the collection. Ie

var sublayer = ((FeatureCollectionLayer)layer).Layers[0];

var idResults = await MyMapView.IdentifyLayerAsync(sublayer, e.Position, pixelTolerance, returnPopupsOnly, maxResults);

Re: Identify features also support FeatureCollectionLayer

dotMorten_esri — Mon, 11 Dec 2017 17:52:38 GMT

...actually did you look at the idResults.SublayerResults ? Come to think of it, your geoelements might just be in there.

Re: Identify features also support FeatureCollectionLayer

TakahiroKAMIYA — Wed, 13 Dec 2017 09:13:07 GMT

Hello Morten,

Thank you for the information.

var layer = MyMapView.Map.OperationalLayers[0];

var idResults = await MyMapView.IdentifyLayerAsync(layer, e.Position, pixelTolerance, returnPopupsOnly, maxResults);

We were able to get elements of GeoElements from idResults.SublayerResults.

Thank you very much!