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IEditEvents.OnSelectionChanged Event (ArcObjects .NET 10.5 SDK)

ArcObjects Library Reference (Editor)

IEditEvents.OnSelectionChanged Event

[Visual Basic .NET]
Public Event OnSelectionChanged As OnSelectionChangedEventHandler

[C#]
public event OnSelectionChangedEventHandler OnSelectionChanged

Available with ArcGIS Desktop.

Whenever the feature selection status changes during an edit session, the OnSelectionChanged event is fired.  Whenever the selection changes the location of the editor's SelectionAnchor is updated; if the AuxiliarySelectionAnchor is visible then its location is updated also.