StreamObject ClearData Function. Clear the data and compression settings for the stream. ABCpdf .NET PDF Library. From ABCpdf .net previous page next page ClearData Function Clear the data and compression settings for the stream. Syntax [C#] void ClearData() [Visual Basic] Sub ClearData() Params Name Description none Notes Clears all data and compression settings leaving the stream empty of data. Example None. previous page start next page