Why does my code to download files produce corrupted PDFs? [closed]

Answer 1

public void DownloadTeamPhoto(string fileName)
{
  string mimeType = MimeAssistance.GetMimeFromRegistry(fileName);
  Response.ContentType = mimeType;
  Response.AppendHeader("Content-Disposition", "attachment; filename=" + 
  Path.GetFileName(basePath + fileName)); //basePath= @"~/Content/
  Response.WriteFile(basePath + fileName); //basePath= @"~/Content/
  Response.End();

}

public static string GetMimeFromRegistry(string Filename)
{
  string mime = "application/octetstream";
  string ext = System.IO.Path.GetExtension(Filename).ToLower();
  Microsoft.Win32.RegistryKey rk = 
  Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(ext);

  if (rk != null && rk.GetValue("Content Type") != null)
     mime = rk.GetValue("Content Type").ToString();

  return mime;
}