EmbeddedFile Checksum Property. The 16 byte checksum for the embedded file. ABCpdf .NET PDF Library. From ABCpdf .net previous page next page Checksum Property Type Default Value Read Only Description [C#] string [Visual Basic] String null No The 16 byte checksum for the embedded file Notes The 16 byte checksum for the embedded file. f there is no such checksum the value will be null. Example None. previous page start next page