This class encapsulates the data for the IBindingList.ListChanged event. You can determine the OldIndex and NewIndex of the item that was changed. The ListChangedType determines what kind of change raised the event. public class ListChangedEventArgs : EventArgs { // Public Constructors public ListChangedEventArgs ( ListChangedType listChangedType , int newIndex ); public ListChangedEventArgs ( ListChangedType listChangedType , int newIndex , int oldIndex ); public ListChangedEventArgs ( ListChangedType listChangedType , PropertyDescriptor propDesc ); // Public Instance Properties public ListChangedType ListChangedType {get; } public int NewIndex {get; } public int OldIndex {get; } } HierarchySystem.Object System.EventArgs ListChangedEventArgs Passed ToListChangedEventHandler.{BeginInvoke() , Invoke()} |