Which method is safer and faster for file encryption?

I have a requirement to upload medical files and encrypt them

Should I use this method :  (filestream)
http://weblogs.asp.net/aghausman/archive/2009/03/16/saving-and-retrieving-file-using-filestream-sql-server-2008.aspx

OR should I encrypt the file in the code, like this:
http://support.microsoft.com/kb/307010

-- As far as safety and speed, which one is better? I'm thinking if I use "filestream", I still need to encrypt the file. Would the file get corrupted?
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CamilliaAsked:
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masterpassCommented:
The first method is just a standard method to store the file to the DB .. If you need to use the encryption, then you willl need to employ method two with method 1

hope this helps!

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Ephraim WangoyaCommented:
Use the FileStream to store the files but Encrypt the data before saving it.

Similarly to retrieve the data, retrieve from the FileStream, then Decrypt it before display
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