'宣言 Protected ReadOnly Property ShadowProperties As System.ComponentModel.Design.ComponentDesigner.ShadowPropertyCollection
'使用法 Dim instance As C1MultiDocumentDesigner Dim value As System.ComponentModel.Design.ComponentDesigner.ShadowPropertyCollection value = instance.ShadowProperties
protected System.ComponentModel.Design.ComponentDesigner.ShadowPropertyCollection ShadowProperties {get;}