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hey i have a submit test method and ive tried to assign a score to it based on if the answers chosen are correct. everything works even the i++ is being updated but the score for some reason refuses to be updated?

how can i fix this please

        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)

                // 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
                // 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

            // 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");
                // Redirect back to the test page with a failure message
                TempData["TestResult"] = "You failed the test.";
                return RedirectToAction("TakeTest", new { moduleId = model.ModuleID });

What I have tried:

i have tried debugging, using breakpoints on everysingle small step.

i ahve reexamined multiple times that all the correct values are being retrieved which they are.

and evn the i++ part is being updated correctly but the score value is not.
Updated 24-May-23 1:08am
Graeme_Grant 24-May-23 8:12am    
What is hidden in here?
TestViewModel model
Steve PlaysGames 25-May-23 2:57am    
the view for taking the test. where peopl asnwer questions in either check box or radio form
Graeme_Grant 25-May-23 3:22am    
I realise that. Just remember, we can not see your screen and can only comment on what is posted in your question. You are here asking for help, as you are stuck, so what you think may not be the problem, could be the issue.

For you, you need to set a breakpoint on the first line, then step lime by line and check the values to see if your logic is responding correctly. If you write your code modularly, you can test the module with staged data and check responses. Then use the method that I described to debug your code.
Steve PlaysGames 25-May-23 3:54am    
i have allready done that and checked all the values. they are being retrived and updated correctly. everything works exept the score. for some reason it refuses to be updated.
Graeme_Grant 25-May-23 4:01am    
Setting breakpoints and stepping over each line will show you the issue. ie: 1 + 1 = 3, then you have a bug, 1 + 1 = 2, you don't. It is that simple.

1 solution

We can't tell - we have no access to your data and that is needed to duplicate exactly what the code is doing for you.

So, it's going to be up to you.
Fortunately, you have a tool available to you which will help you find out what is going on: the debugger. If you don't know how to use it then a quick Google for "Visual Studio debugger" should give you the info you need.

Put a breakpoint on the first line in the function, and run your code through the debugger. Then look at your code, and at your data and work out what should happen manually. Then single step each line checking that what you expected to happen is exactly what did. When it isn't, that's when you have a problem, and you can back-track (or run it again and look more closely) to find out why.

Use breakpoints to find out if the score++ is being executed at all initially, and the chances are it isn't. so start moving breakpoints until you get top a point where the breakpoint is hit, and you think it should go on to update the score. Then single step to find out exactly which path it is following, and look at the variables involved to find out why it doesn't go as you expected it to.

Sorry, but we can't do that for you - time for you to learn a new (and very, very useful) skill: debugging!
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Steve PlaysGames 24-May-23 7:18am    
did you read my description? all of this i ahve allready tried. and everything works exept the score. i dont know why. but thanks for the quick respone
Richard Deeming 24-May-23 7:32am    
Did you read the solution? We cannot debug your code for you.
OriginalGriff 24-May-23 7:52am    
You OP says "I debugged" but that means many different things to many different people: form "it compiles ok" to "I disassembled the EXE and think i't a problem to do with the RRDA instruction".

If you've used the debugger, then you know exactly which path it takes through the code, exactly when the score is changed, and exactly when it "becomes zero again". We don't - and without the rest of your app and the data it processes we can't.

Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project

So, does score get changed? Where? When? When does it revert? How you you know it doesn't get updated? We have no idea!
Steve PlaysGames 25-May-23 2:48am    
the method checks the database to see if the user answered answers correctly in form of radio and check box. this part is beig correctly retrieved and i++ gets updated accordingly. but for some reason the score does not.
OriginalGriff 25-May-23 3:14am    
And? How can you tell? When can you tell? What did you do to know it isn't getting updated?

I'm not being awkward, we can't run your code under your conditions - only you can.

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