skool1

static void Main(string[] args)
        {
            Console.WriteLine("This is a file-management based quiz application.");
            Console.WriteLine("Press ENTER to begin.");
            Console.ReadKey();
            Console.Clear();
            Console.WriteLine();
            Console.WriteLine("Please select which quiz you'd like to answer: ");
            Console.WriteLine();
            DirectoryInfo dinfo = new DirectoryInfo(@"D:\Documents\Computing\Projects\School apps\Quiz project");
            FileInfo[] quizzes = dinfo.GetFiles("*.txt");
            int counter = 1;
            foreach (FileInfo quiz in quizzes)
            {
                int index = quiz.Name.IndexOf(".");
                string fileName = quiz.Name.Substring(0, index);
                Console.WriteLine("[" + counter + "] " + fileName);
                counter = counter + 1;
            }
            Console.WriteLine();
            Console.Write("Selection > ");
            int quizSelected = int.Parse(Console.ReadLine());
            Console.Clear();
            string quizSelectedName = quizzes[quizSelected - 1].Name.ToString().Substring(0, quizzes[quizSelected - 1].Name.ToString().IndexOf('.'));
            Console.WriteLine();
            Console.WriteLine("Starting your selected quiz: " + quizSelectedName + "!");
            string quizDir = @"D:\Documents\Computing\Projects\School apps\Quiz project\" + quizSelectedName + ".txt";
            Console.WriteLine("Press ENTER to start!");
            Console.ReadKey();

            // Formatting guide.
            // Files are formatted as follows:
            //
            // What is the answer to question 1?;Answer1
            // What is the answer to question 2?;Answer2
            // What is the answer to question 3?;Answer3

            StreamReader quizReader = new StreamReader(quizDir);
            int lines = File.ReadAllLines(quizDir).Count();
            int score = 0;
            for (int i = 0; i < lines; i++)
            {
                Console.Clear();
                string thisLine = quizReader.ReadLine();
                string thisQuestion = thisLine.Substring(0, thisLine.IndexOf(";"));
                string thisAnswer = thisLine.Substring(thisLine.IndexOf(";") + 1).ToLower();
                Console.WriteLine();
                Console.WriteLine("Current Score: {0}", score);
                Console.WriteLine("You've answered " + i + " questions so far.");
                Console.WriteLine();
                Console.WriteLine("------ QUESTION " + (i + 1) + " ------");
                Console.WriteLine();
                Console.WriteLine("Q > " + thisQuestion);
                Console.Write("A > ");
                string givenAnswer = Console.ReadLine().ToLower();
                if (givenAnswer == thisAnswer)
                {
                    // Correct!
                    score = score + 1;
                    Console.WriteLine();
                    Console.WriteLine("Answer correct! :)");
                }
                else
                {
                    // Incorrect!
                    Console.WriteLine();
                    Console.WriteLine("Answer incorrect, sorry! :(");
                }
                Console.ReadKey();
            }
            Console.Clear();
            Console.WriteLine();
            Console.WriteLine("Quiz \"" + quizSelectedName + "\" completed!");
            string Percentage = ((score/lines)*100).ToString("0.0");
            Console.WriteLine("You scored " + score + "/" + lines + " ("+Percentage+"%)!");
            Console.WriteLine();
            // High score saving etc.
            // Format:
            //
            // Quiz name; Person1,Score
            // Quiz name; Person2,Score

            // End of program.
            Console.WriteLine("Application completed. Press ENTER to exit.");
            Console.ReadKey();
        }