public class ExpansionIndicatorColumn : Infragistics.Controls.Grids.Column, Infragistics.IProvidePropertyPersistenceSettings, Infragistics.ISelectableObject
'宣言
Public Class ExpansionIndicatorColumn
Inherits Infragistics.Controls.Grids.Column
Implements Infragistics.IProvidePropertyPersistenceSettings, Infragistics.ISelectableObject