public ActionResult Success(string response)
{
SuccessModel model = new SuccessModel();
ViewBag.Message = "Visa Checkout - Success result.";
dynamic result = JsonConvert.DeserializeObject(response);
model.EncryptedData = JsonConvert.SerializeObject(result, Formatting.Indented);
ResponseHandler handler = new ResponseHandler();
string unencrypted = handler.DecryptPaymentData(SharedKey, result.encKey.ToString(), result.encPaymentData.ToString());
dynamic eData = JsonConvert.DeserializeObject(unencrypted);
model.UnencryptedData = JsonConvert.SerializeObject(eData, Formatting.Indented);
ViewBag.CallID = result.callid;
return(View(model));
}