'宣言 Public Shared ReadOnly Property Empty As RectangleD
'使用法 Dim value As RectangleD value = RectangleD.Empty
public static RectangleD Empty {get;}
'宣言 Public Shared ReadOnly Property Empty As RectangleD
'使用法 Dim value As RectangleD value = RectangleD.Empty
public static RectangleD Empty {get;}