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