When I programatically select from a FeatureLayer anytime ofter selecting on the map, The application freezes.

EugeneStaten — Tue, 16 Jun 2026 18:29:17 GMT

I have a class that wraps a FeatueLayer. This is to make sure I can make MCT calls organically from other code.

public class FeatureLayerWrapper { FeatureLayerWrapper(FeatureLayer featLayer){ RawfeatureLayer = featLayer; } public FeatureLayer RawfeatureLayer { get; private set;} public async Task<Selection> Select( QueryFilter queryFilter = null, SelectionCombinationMethod method = SelectionCombinationMethod.New, TimeRange time = null, RangeExtent range = null, CIMFloorFilterSettings floor = null) { return await QueuedTask.Run(() => FeatureLayer.Select(queryFilter, method, time, range, floor)); } }

The Select method works, until I first select a few features via map selection, and then try to AND to the selection via a QueryFilter:

string filter = SelectFilter(featureLayer.Prefix); if (!string.IsNullOrEmpty(filter)) { if (featureLayer.Prefix.ToUpper().Equals("SIM")) { await featureLayer.Select(new QueryFilter(){WhereClause = "\"State\" <> 'Merged'", SelectionCombinationMethod.And); } else { await featureLayer.Select(new QueryFilter(){WhereClause = filter}, SelectionCombinationMethod.And); } MapView.Active.RedrawAsync(true); filterSelected = true; }

The application freezes at this point. Its not just AND, its any other programatic Selection. post map selection, that sinks into a black hole, never to return.

So... Is there a map selection lock, I must disengage or is this a bug, or is it something else?

Re: When I programatically select from a FeatureLayer anytime ofter selecting on the map, The application freezes.

EugeneStaten — Tue, 16 Jun 2026 20:48:20 GMT

So... I tried to ClearSelection using await QueuedTask.Run(() => MapView.Active.Map.ClearSelection());

This, too, froze the application.

topic Re: When I programatically select from a FeatureLayer anytime ofter selecting on the map, The application freezes. in ArcGIS Pro SDK Questions

When I programatically select from a FeatureLayer anytime ofter selecting on the map, The application freezes.

Re: When I programatically select from a FeatureLayer anytime ofter selecting on the map, The application freezes.