setup-events.cs

private IEditEvents_Event _editEvents;
private IEditEvents2_Event _editEvents2;...

/// <summary>
/// Wire up the extension to editing events.
/// </summary>
/// <param name="editor">The current editor</param>
private void AttachEditingEvents(IEditor2 editor)
{
 if (editor != null)
 {
 _editEvents = editor as IEditEvents_Event;
 _editEvents.OnStartEditing += OnStartEditing;
 _editEvents.OnStopEditing += OnStopEditing;
 _editEvents2 = editor as IEditEvents2_Event;
 _editEvents2.OnSaveEdits += OnSaveEdits;
 }
}