Thanks for you follow up.
Actually, I'm writing to an html in ASP.NET. I'm at the point of writing the piece of software to create our departments, users, etc. barcodes that we'll print on labels around our shop floor. Eventually I might need to use the capacity in reports
but most report generators can already generate barcodes.
The image created goes inside a button with a text value under it. The user press that button and a clean "printable" version comes out on a popup.
And yes I modified the code to this:
System.IO.FileStream fs = new System.IO.FileStream(AppDomain.CurrentDomain.BaseDirectory.ToString() + attributeValue.Text + ".jpg",System.IO.FileMode.OpenOrCreate);
renderer.WriteToStream(qrCode.Matrix, System.Drawing.Imaging.ImageFormat.Jpeg, fs);
and it works fine.
Thank you for your help.