public ActionResult Index(string theValue) { var base64ImageBytes = ""; try { bool addChecksum = false; // generate QR Code barcode base64ImageBytes = GeneratorHelper.GetBase64Barcode(theValue, SymbologyType.QRCode, addChecksum); } catch (Exception e) { ViewBag.Error = e.Message; return(View()); } var str = string.Format("<img src=\"data:image/png;base64,{0}\">", base64ImageBytes); ViewBag.Image = str; return(View()); }