Momina Razzaq

Hi, I have a question relating to enrollment of fingerprints. database.dat is the file where the whole data is stored. What I want to do is to append the extracted templates keeping the previous template data in database.dat file. For this purpose, I set the FileMode.Create to FileMode.Append but this is not working. Kindly help me so that I can keep the previous data in database.dat file plus append the new data in database.dat file. Regards,