topic Re: Programatically selecting features in Pro 3 API in ArcGIS Pro SDK Questions

Programatically selecting features in Pro 3 API

StuartBricker — Fri, 08 Jul 2022 18:18:52 GMT

In the 2.x API, I was able to set the map selection via the below code.

MapView.Active.Map.SetSelection(new Dictionary<MapMember, List<long>> { { bFl, oidList } });

in 3.0, this code errors out, but the intellisense says that the SetSelection method takes a SelectionSet object as a parameter.

However, I cannot figure out how to instantiate a SelectionSet object. There is no useful information in the API reference for SelectionSet, and the only snippet for the .SetSelection() method is how to clear the selection with .SetSelection(null).

So I am at a loss. How does one programatically select features on the map with the new 3.0 API, given a BasicFeatureLayer object and a list of objectIDs?

Re: Programatically selecting features in Pro 3 API

Wolf — Fri, 08 Jul 2022 18:35:22 GMT

If you have the dictionary as in:

var selectionDictionary = new Dictionary<MapMember, List<long>>();

You can then use the static 'FromDictionary' method to create a selection set like this sample (from community samples) that uses a selection set to flash a set of corresponding features:

await QueuedTask.Run(() =>
{
	//Flash the collection of features.
	var selectionSet = SelectionSet.FromDictionary(selectionDictionary);
	mapView.FlashFeature(selectionSet);
});

Also there is a sample in the 3.0-Migration-Guide that you can find if you search for "SelectionSet" or "FromDictionary".

Re: Programatically selecting features in Pro 3 API

StuartBricker — Fri, 08 Jul 2022 18:45:59 GMT

Thank you so much, @Wolf. I appreciate your reply, and so does my blood pressure & sanity 🙂