[ObsoleteAttribute("get and set are not implemented")]
public bool HasValue { get; set; }

<ObsoleteAttribute("get and set are not implemented")> 
Public Property HasValue As Boolean
	Get
	Set

public:
[ObsoleteAttribute(L"get and set are not implemented")]
property bool HasValue {
	bool get ();
	void set (bool value);
}

[<ObsoleteAttribute("get and set are not implemented")>]
member HasValue : bool with get, set