'宣言 Public Class GroupColumnsCollection Inherits Infragistics.Collections.CollectionBase(Of Column) Implements Infragistics.ICollectionBase, Infragistics.ICollectionBase(Of Column), Infragistics.IProvidePersistenceLookupKeys, Infragistics.IProvidePropertyPersistenceSettings
public class GroupColumnsCollection : Infragistics.Collections.CollectionBase<Column>, Infragistics.ICollectionBase, Infragistics.ICollectionBase<Column>, Infragistics.IProvidePersistenceLookupKeys, Infragistics.IProvidePropertyPersistenceSettings