public IActionResult Quiz(QuizModel qModel, string action) { qModel = QuizModel.Instance; if (Request.Form["userAnswer"] != "") { qModel.userAnswer = Int32.Parse(Request.Form["userAnswer"]); qModel.Check(); if (action == "Next") { QuizModel quModel = QuizModel.Instance; quModel.Start(); return(View(quModel)); } return(RedirectToAction("QuizResult")); } else { QuizModel quModel = QuizModel.Instance; return(View(quModel)); } }