SpatialReferenceChangedEventArgs Class
Passed as the event parameter in the SelectedSpatialReference event for the
CoordinateSystemsControl.
System.Object
System.EventArgs
ArcGIS.Desktop.Mapping.Controls.SpatialReferenceChangedEventArgs
Target Platforms: Windows 11, Windows 10, Windows 8.1
ArcGIS Pro version: 2.0 or higher.