'宣言 Public Class PivotSelectedColumnsCollection Inherits Infragistics.Controls.Grids.PivotSelectedCollectionBase(Of PivotDataColumn) Implements Infragistics.ICollectionBase, Infragistics.ICollectionBase(Of PivotDataColumn)
public class PivotSelectedColumnsCollection : Infragistics.Controls.Grids.PivotSelectedCollectionBase<PivotDataColumn>, Infragistics.ICollectionBase, Infragistics.ICollectionBase<PivotDataColumn>