public SelectionSet GetSelection()

{
  // Loads the selected features into an Inspector instance.
  // get the first layer and its corresponding selected feature OIDs
  var firstSelectionSet = selectedFeatures.ToDictionary().First();
  // create an instance of the inspector class
  var inspector = new Inspector();
  // load the selected features into the inspector using a list of object IDs
  await inspector.LoadAsync(firstSelectionSet.Key, firstSelectionSet.Value);
}

// Retrieves the value of a specific attribute and the geometry of the first selected feature from the provided selection set.
await QueuedTask.Run(() =>
{
  // get the first layer and its corresponding selected feature OIDs
  var firstSelectionSet = selectedFeatures.ToDictionary().First();

  // create an instance of the inspector class
  var inspector = new Inspector();

  // load the selected features into the inspector using a list of object IDs
  inspector.Load(firstSelectionSet.Key, firstSelectionSet.Value);

  //get the value of
  var pscode = inspector["STATE_NAME"];
  var myGeometry = inspector.Shape;
});

{
  // Note: Needs QueuedTask to run
  {
    //Get the selected features from the map and filter out the standalone table selection.
    var selectedFeatures = mapView.Map.GetSelection();

    //Flash the collection of features.
    mapView.FlashFeature(selectedFeatures);
  }
}