Loading Byte data from database file

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Hi,
I am using following code to get data from database and load to picture box

VB

Dim vrPicFromDB = IO.File.ReadAllBytes(DsPic.tblPicTest.Item("Picture"))
        Dim ms As New MemoryStream(vrPicFromDB)
        PictureBox1.Image = Image.FromStream(ms)

It gives error on DsPic.tblPicTest.Item("Picture")) portion of the statement.
I also tried

VB

CByte(DsPic.tblPicTest.Item("Picture")))

but it gives the same error.

Please advise how to fix it.
Thanks
Furqan

Posted 29-Jul-11 5:04am

Furqan Sehgal

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Manas Bhardwaj 29-Jul-11 11:12am

what is the error?

2 solutions

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Manas Bhardwaj · Answer 1 · 2011-07-29T05:14:00

Solution 1

wait, you mentioned that you are trying to read bytes from database. What is File doing here then?

~~IO.File.ReadAllBytes~~

If you already saved your data in binary format, you might not need any conversion at all.

Posted 29-Jul-11 5:14am

Manas Bhardwaj

Updated 29-Jul-11 5:15am

v2

Comments

Furqan Sehgal 29-Jul-11 12:31pm

Thanks,
I also tried
Dim vrPicFromDB = DsPic.tblPicTest.Item("Picture")
but it did not work.......... The value is being stored in Bytes

Kschuler 29-Jul-11 16:09pm

What error did you get when you tried this?

Kschuler · Answer 2 · 2011-07-29T10:09:00

First of all, the parm for
IO.File.ReadAllBytes is a file path. If you are storing your image in bytes you don't need this.

Secondly, IO.File.ReadAllBytes Returns a Byte Array. Not a byte. That is why CByte doesn't work.

If you are having trouble understanding built in functions like that, try google or MSDN for help. For example, here is the documentation on ReadAllBytes[^].

Try declaring vrPicFromDB as a byte array and then just set it equal to DsPic.tblPicTest.Item("Picture").