>byte[] ba = (byte[])Tables.Tables["company"].Rows[0]["Image"];
>MemoryStream stream = new MemoryStream(ba);
>stream.Write(ba, 0, ba.Length);
>Bitmap bitmap = (Bitmap)Bitmap.FromStream(stream, true); --> parameter is not valid...

>this.pictureBox1.Image = bitmap;

I don't know why the error is still, but i did the next test.
I saved image field on file d:\test.jpg and changed code for this:

Bitmap bitmap = new Bitmap("d:\\test.jpg");
this.pictureBox1.Image = bitmap;

and it works, that means the image on general field is ok right?