'宣言 Public Class SelectedColumnsCollection Inherits Infragistics.Controls.Grids.SelectedCollectionBase(Of Column) Implements Infragistics.ICollectionBase, Infragistics.ICollectionBase(Of Column), Infragistics.IProvideCustomPersistence
public class SelectedColumnsCollection : Infragistics.Controls.Grids.SelectedCollectionBase<Column>, Infragistics.ICollectionBase, Infragistics.ICollectionBase<Column>, Infragistics.IProvideCustomPersistence