Question

I am currently using Visual Studio 2008 (VB.Net) and SQL Server 2008. I have images saved on the database as image. When I fetch it into my code it is a System.Byte[] and I am unable to cast it as a System.Drawing.Image to save to my DevExpress(v10.2).XtraEditors.ImageEdit.

I have tried to

Dim imgStream As MemoryStream = New MemoryStream(image, 0, image.Length)

or

Dim imgStream As MemoryStream = New MemoryStream(image)

Yet even then I am unable to call image.FromStream(imgStream) or bitmap.FromStream(imgStream) as I get a “Parameter is not valid” when I try.

EDIT:

We are updating from a previous system that was on SQL 2000. When I run the previous program I can see the image in the program. When I run the new one any image that I migrated is an ‘invalid parameter’ yet any image I added to the database (through the input on the program) is viewable. When I fetch the image from the old database and the new one they are the exact same. Is there a difference between SQL 2000 and SQL 2008 that I should take into account when migrating the data?

Answer 1

Try this:

Dim MyConverter as ImageConverter = new System.Drawing.ImageConverter()
Dim MyImage as Image = imageConverter.ConvertFrom(byteArray)

However, this error usually means that your input data is invalid. How sure are you that your byte array contains valid image data?