public abstract class DropDownEditorButtonBase : EditorButton, Infragistics.Shared.IKeyedSubObject, Infragistics.Shared.IKeyedSubObjectEx
'宣言
Public MustInherit Class DropDownEditorButtonBase
Inherits EditorButton
Implements Infragistics.Shared.IKeyedSubObject, Infragistics.Shared.IKeyedSubObjectEx