// GET: /QRCode/
 public ActionResult Index()
 {
     PurchaseOrderRepository rep = new PurchaseOrderRepository();
     List<string> urls = rep.ListUnusedQRUrls(18);
     ViewBag.UnusedQRCodeCount = rep.GetUnusedQRCodeCount();
     return View(urls);
 }
 public ActionResult PrinterFriendlyIndex(int numPages)
 {
     PurchaseOrderRepository rep = new PurchaseOrderRepository();
     List<string> urls = rep.ListUnusedQRUrls(48 * numPages);
     return View(urls);
 }