This type contains information about the changes to a node that are passed when an XmlDocument calls through an XmlNodeChangedEventHandler delegate instance. It contains the changed or changing node, the old and new parents to that node, and an enumeration describing the change (modification, insertion, or removal).

public class XmlNodeChangedEventArgs {
// Public Instance Properties
   public XmlNodeChangedAction Action{get; }
   public XmlNode NewParent{get; }
   public XmlNode Node{get; }
   public XmlNode OldParent{get; }
}

Passed To

XmlNodeChangedEventHandler.{BeginInvoke( ), Invoke( )}