public ActionResult updatePreferences(string mr, string sc) { string m = ""; string r = ""; if (mr == null || sc == null) { mr = "0"; sc = "0"; } int Mr = 0; int Sc = 0; bool isValidMr = int.TryParse(mr, out Mr); bool isValidSc = int.TryParse(sc, out Sc); if (isValidMr == false || isValidSc == false) { m = "Invalid input"; r = "e"; } else { r = "s"; PreferencesModel pm = new PreferencesModel(); pm.mealrate = Mr.ToString(); pm.servicecharge = Sc.ToString(); pm.updatePrefrences(); if (pm.response == "500") { r = "e"; m = "Something went wrong! Try again..."; } else { r = "s"; } } return(Json(new { msg = m, msgtype = r })); }