public abstract bool DoAction(
	ICartellaObject obj,
	IFolio folio,
	ISiteManager siteManager,
	out string returnValue,
	out string errorMessage
)

Public MustOverride Function DoAction ( _
	obj As ICartellaObject, _
	folio As IFolio, _
	siteManager As ISiteManager, _
	<OutAttribute> ByRef returnValue As String, _
	<OutAttribute> ByRef errorMessage As String _
) As Boolean

public:
virtual bool DoAction(
	ICartellaObject^ obj, 
	IFolio^ folio, 
	ISiteManager^ siteManager, 
	[OutAttribute] String^% returnValue, 
	[OutAttribute] String^% errorMessage
) abstract