ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / BasicFeatureLayer Class / ClearSelection Method
Example Version

ClearSelection Method (BasicFeatureLayer)
Clears the current selection. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
public void ClearSelection()
Exceptions
ExceptionDescription
This method or property must be called within the lambda passed to QueuedTask.Run.
Example
Clear selection for a specific layer
var lyr = MapView.Active.Map.GetLayersAsFlattenedList().OfType<FeatureLayer>().FirstOrDefault();
QueuedTask.Run(() =>
{
  lyr.ClearSelection();
});
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also