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image field in sql database convert to actual files

Posted on 2011-03-22
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Last Modified: 2012-05-11
I have a bunch of binary data in my database in a image fields... I want to convert the binary files to
ACTUAL FILES  that i can save in a folder... can somebody tell me how to do this?

I will do this where datareader is the image field

 Do while
    dr("imagefield") 'DO SOMETHING
loop



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Question by:vbnetcoder
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5 Comments
 
LVL 75

Accepted Solution

by:
käµfm³d   👽 earned 2000 total points
ID: 35192567
Unless I'm way off, the data should be coming back as a byte array [ Byte() ]. You could load that into a Stream for writing (this is an overview; you'll need to tweak it):
Do While
    Using ms As New System.IO.MemoryStream(DirectCast(dr("imagefield"), Byte()))
        Using img As Image = Image.FromStream(ms)
            img.Save("someFilename.someExt")
        End Using
    End Using
Loop

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Author Comment

by:vbnetcoder
ID: 35192833
That worked, Thank you!  Can you tell how I can tell for sure that there is a image?  Some fields may return as null.

Thank you
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Author Comment

by:vbnetcoder
ID: 35192895
Never mind i got it
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Author Closing Comment

by:vbnetcoder
ID: 35192901
ty
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LVL 75

Expert Comment

by:käµfm³d 👽
ID: 35193084
NP. Glad to help  = )
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