'宣言 Public Shared ReadOnly Property ParentWidth As LengthRef
'使用法 Dim value As LengthRef value = LengthRef.Predefined.ParentWidth
public static LengthRef ParentWidth {get;}
'宣言 Public Shared ReadOnly Property ParentWidth As LengthRef
'使用法 Dim value As LengthRef value = LengthRef.Predefined.ParentWidth
public static LengthRef ParentWidth {get;}