To test it, I created a varbinary(MAX) in the Customer table of the StrataFrameSample database (cust_Bin) and used it to store a .pdf file (you will find it in the project folder itself) called TestPDF.pdf. There are two buttons, one encrypt the file and save it to the BO. The other reads the contents from the BO and creates a file on the Desktop (change the line where the FileStream is created to address your Desktop).