How Can I Retrieve the Number Displayed After "Show Feature Counts" for Legends in Layouts?

[MaxWei]

As stated in the title, I'm looking to retrieve the number displayed for feature counts in legends within a layout. How can I achieve this?

How to get this counts

[UmaHarano]

You can get the number of features in a layer using the Pro API's, FeatureClass.GetCount() method.

var featureLayer = MapView.Active.Map.GetLayersAsFlattenedList().OfType<FeatureLayer>().FirstOrDefault(n => n.Name == "TestPoly");
QueuedTask.Run( () => {
  var featureClass = featureLayer.GetFeatureClass();
  var count = featureClass.GetCount();
});