【解決方法】C# でスコアの問題を解決する方法

こんにちは、送信テストメソッドがあり、選択した回答が正しいかどうかに基づいてスコアを割り当てようとしました。 i++ が更新されていてもすべて機能しますが、何らかの理由でスコアの更新が拒否されますか?

どうすればこれを修正できますか

[HttpPost]
        public IActionResult SubmitTest(TestViewModel model)
        {
            // Check if the user has already passed the test
            bool hasPassed = HttpContext.Session.GetBool("TestPassed");

            // If the user has already passed, redirect to the course page
            if (hasPassed)
            {
                return RedirectToAction("TakeCourse", "Courses");
            }

            // Retrieve the module and questions from the database
            Module module = _context.Modules.FirstOrDefault(m => m.ID == model.ModuleID);
            List<Question> questions = GetQuestionsForModule(module);

            // Keep track of the user's score
            int score = 0;

            // Iterate over the questions and check the selected answers
            for (int i = 0; i < questions.Count; i++)
            {
                Question question = questions[i];

                // Get the selected answer(s) for the current question
                int[] selectedAnswerIds = model.Answers
                    .Where(a => a.QuestionID == question.Id)
                    .Select(a => a.ID)
                    .ToArray();

                // Get the answer count for the current question
                int answerCount = GetAnswerCountForQuestion(question.Id);

                // Check if the question is a radio type
                if (question.QuestionType == QuestionType.RADIO)
                {
                    // Retrieve the correct answer for the question
                    Answer correctAnswer = question.Answers.FirstOrDefault(a => a.IsCorrectAnswer);

                    // Check if the selected answer matches the correct answer
                    if (correctAnswer != null && selectedAnswerIds.Length == 1 && correctAnswer.IsCorrectAnswer)
                    {
                        // Increase the score if the selected answer is correct
                        score++;
                    }
                }
                // Check if the question is a checkbox type
                else if (question.QuestionType == QuestionType.CHECKBOX)
                {
                    // Retrieve the correct answers for the question
                    List<Answer> correctAnswers = question.Answers.Where(a => a.IsCorrectAnswer).ToList();

                    // Check if all selected answers are correct and no incorrect answers are selected
                    if (correctAnswers.Count == selectedAnswerIds.Length &&
                        selectedAnswerIds.All(id => correctAnswers.Any(a => a.ID == id && a.IsCorrectAnswer)))
                    {
                        // Increase the score if all selected answers are correct
                        score++;
                    }
                }
            }

            
            
            // Determine if the user passed or failed the test based on the score
            bool passed = score == questions.Count;

            // If the user passed, store the information in the session and redirect to the course page
            if (passed)
            {
                HttpContext.Session.SetBool("TestPassed", true);
                return RedirectToAction("TakeCourse", "Courses");
            }
            else
            {
                // Redirect back to the test page with a failure message
                TempData["TestResult"] = "You failed the test.";
                return RedirectToAction("TakeTest", new { moduleId = model.ModuleID });
            }
        }

私が試したこと:

小さなステップごとにブレークポイントを使用してデバッグを試みました。

すべての正しい値が実際に取得されていることを何度も再検査しました。

i++ 部分は正しく更新されていますが、スコア値は更新されていません。