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