'宣言 Public ReadOnly Property NextPage As ButtonPreviewElement
'使用法 Dim instance As ToolBarElements Dim value As ButtonPreviewElement value = instance.NextPage
public ButtonPreviewElement NextPage {get;}
'宣言 Public ReadOnly Property NextPage As ButtonPreviewElement
'使用法 Dim instance As ToolBarElements Dim value As ButtonPreviewElement value = instance.NextPage
public ButtonPreviewElement NextPage {get;}