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