how to insert an image into database directly from picturebox

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i have a scanning device which makes me can capture an image and store it into picture box without reading from hard disk, i want to be able to insert the image into database directly from the picturebox without reading it from a specified path
any sample of code ?

Thanks

Posted 3-Aug-11 2:41am

snake1

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OriginalGriff · Accepted Answer · 2011-08-03T02:46:00

Solution 1

C#

private static void SavePictureBoxToDatabase(PictureBox myPictureBox)
    {
    MemoryStream ms = new MemoryStream();
    myPictureBox.Image.Save(ms, ImageFormat.Jpeg);
    ms.Seek(0, 0);
    WriteToMyDatabase(ms.GetBuffer());
    }

Obviously, you have to write the WriteToMyDatabase method since we don't know what database type you are dealing with...

Posted 3-Aug-11 2:46am

OriginalGriff

Comments

snake1 3-Aug-11 9:59am

myPictureBox.Image.Save(ms,ImageFormat.Jpeg)

i get an exception here object reference not set

OriginalGriff 3-Aug-11 10:03am

Did you pass it a PictureBox? If so, did you set the Image first? You did say that your scanner stores it to a PictureBox and the Image is the only relevant property...

snake1 3-Aug-11 10:22am

i have scanned the image and i get this error
the picturebox image is null while setting breakpoint
btw i'm using sqldatabase

OriginalGriff 3-Aug-11 10:24am

Then your scanner did not put the image into the picture box as you think it did.
You need to look at the scanner documentation, or rethink the way you are controlling it. What are you actually doing to scan the image?

snake1 3-Aug-11 10:36am

what if i set the specified image at the designer,why is the picturebox.image in this case is null too?

OriginalGriff 3-Aug-11 10:54am

If you set the image with the designer, then you are using the wrong PictureBox if the Image property is null! Check you code - make sure you are using the actual PictureBox on your form, rather than overwriting it with the "new" keyword at any point. This may also be your other problem...

snake1 3-Aug-11 10:46am

it's the same thing with camera, what should i do ?

snake1 3-Aug-11 11:04am

omg, i didn't sleep well since 3-4 days , ur right it was a wrong picturebox, Thanks very much for your help