IndirectObject Alive Property. Whether the IndirectObject is currently alive. ABCpdf .NET PDF Library. From ABCpdf .net previous page next page Alive Property Type Default Read Only Description [C#] bool [Visual Basic] Boolean n/a Yes Whether the IndirectObject is currently alive. Notes Whether the IndirectObject is currently alive. Objects contained within a PDF document are considered to be alive. Objects which have been created or cloned but have not yet been assigned to a PDF are not considered to be alive. Example None. previous page start next page