topic Re: Identify features from a FeatureCollectionLayer in .NET Maps SDK Questions

Identify features from a FeatureCollectionLayer

IraCunningham — Wed, 10 May 2017 04:04:18 GMT

I am adding features to my map by manually creating a FeatureCollectionLayer from a JSON webservice. Now I am not able to identify features on my map once they are tapped. The IdentifyLayerAsync method seems will not return any GeoElements.

I am using the exact same code on a FeatureLayer and it works perfectly.

Does the process change for a FeatureCollectionLayer?

Re: Identify features from a FeatureCollectionLayer

IraCunningham — Wed, 10 May 2017 21:34:33 GMT

After further research, it appears that identify is only available on Feature Layers and Graphic Layers. Features in a FeatureCollectionLayer are not capable of having GeoElements identified.

Re: Identify features from a FeatureCollectionLayer

TonyWakim — Mon, 15 May 2017 16:58:47 GMT

For identifying on FeatureCollections, try checking the SublayerResults...

something like this:

if (identifyLayerResult.SublayerResults?.Count > 0)

{

foreach (var sr in identifyLayerResult.SublayerResults)

{

if (sr.Popups?.Count > 0)

{

identifyInfoString += sr.LayerContent.Name + ": --> " + sr.Popups.Count + " features identified." + Environment.NewLine;

}

else

{

identifyInfoString += sr.LayerContent.Name + ": --> " + sr.GeoElements.Count + " features identified." + Environment.NewLine;

}