For whatever reason when I use Response.Redirect the window just closes out instead of navigating to the given URL, here is the code.
if (mode == "print")
{
error_code.Text = "";
//thumb.Src = file_loc + "source/" + "certificate_thumbnail.jpeg";
link.HRef = "Certificates/" + u_name + ".pdf";
link.Visible = true;
Response.Redirect("http://xx.xxxxxxxxxxxxx.xx.gov/cert/Certificates/" + u_name + ".pdf");
}
(I removed the url for security purposes given who my client is...)