April 2, 2002 at 7:44 am
I work for the Health Ministry in Brazil, and I have a database (SQL Server 7.0) that will need to work with .jpg pictures associated with ceratin records.
Which is the best way to do that ? I could use some guidance on the issue, what I know is that you have to use image datatype. I don´t have a clue on how to associate the .jpg file stored on disk with the column on the database.
Thanks.
CYA in BRAZIL
CYA in BRAZIL
April 2, 2002 at 10:46 am
This is an often a debated topic. Store the .jpgs in the filesystem and the path in the db or store the image in the db. I vote for the filesystem, but if you search this site for "images" you will find some other threads.
Steve Jones
April 2, 2002 at 2:46 pm
If you want to save/load your image in/from your SQL Server Database you will need to use the Stream object of ADO.
Dim strStream As ADODB.Stream
Dim rs As ADODB.RecordSet
Dim cn As Connection
' This is how to save
Set strStream = New ADODB.Stream
strStream.Type = adTypeBinary
strStream.Open
strStream.LoadFromFile sFileName
rs.Fields("imgImage").Value = strStream.Read
' This is how to load
Set strStream = New ADODB.Stream
strStream.Type = adTypeBinary
strStream.Open
strStream.Write rs.Fields("ImgImage").Value
strStream.SaveToFile "C:\Temp.bmp", adSaveCreateOverWrite
Image1.Picture = LoadPicture("C:\Temp.bmp")
Kill ("C:\Temp.bmp")
This is working with jpeg, gif, bitmap and more.
Have fun,
DaSaint
April 2, 2002 at 7:12 pm
Thanks guys I´ll try it out. But now that we are at it, can I use a normal query to fetch the image once it´s saved, or do I have to do some other trick ??? I mean the only way to fetch the data is using the stream object ???
CYA in BRAZIL
Edited by - Jammer_BR on 04/02/2002 7:35:04 PM
CYA in BRAZIL
April 2, 2002 at 7:44 pm
You can still return it as part of an ADO recordset, but then you have to use the "chunk" methods to write it out to disk. Depends on what you're doing. If you're using ASP the response object supports the IStream interface, you can push your blob directly out the port without having to write it to disk (if that makes sense in your situation anyway!). Stream isn't limited to blobs either, you can use it on disk files.
Andy
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