How to retrieve and display PDF files stored in an Oracle database?

In my ASP.Net 1.1, VB.net application, I have a new requirement to display a list of PDF files
stored in an Oracle database in a datagrid or a ListView control..  The BLOB files are already in the
database.

Can you provide me some guidance on how to retrieve and open a PDF file when the user
clicks on the item in the list control?

The structure of the table housing the PDF files is as follows, if this information is useful:

AF_KEY                     NUMBER(9)
FILENAME            VARCHAR2(25)
FILETYPE             VARCHAR2(3)
FILE_DT                       DATE
DOCUMENT            BLOB
UPDATE_UI_KEY      NUMBER(9)
UPDATE_DT          DATE

Thanks!