I know this kind of question has been asked many times. Yet I don\'t succeed in displaying an image from my db on a page.
I tried the following method.
There's an error in your path reference...
ImageUrl="/~givememypicture.aspx?pic=3"
should be:
ImageUrl="~/givememypicture.aspx?pic=3"
~ is shorthand for "the application root" and needs to be followed by a slash to indicate that it's a directory. Think of it as similar to other path shorthand notations such as . and ...