public void Navigate()
        {
            while (userInput != e)
            {
                // NAVIGATION PANEL
                Console.ForegroundColor = ConsoleColor.White;
                Console.WriteLine("____________________________TYPE TO NAVIGATE________________________________");
                Console.ForegroundColor = ConsoleColor.DarkRed;
                Console.WriteLine("============================================================================");
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine($"| {"(1) STUDENTS",-12} | {"(2) TRAINERS",-12} | {"(3) ASSIGNMENTS",-12} | {"(4) COURSES",-11} | {"(E) RETURN",-9} |");
                Console.ForegroundColor = ConsoleColor.DarkRed;
                Console.WriteLine("============================================================================");
                Console.ForegroundColor = ConsoleColor.White;

                userInput = Console.ReadLine();

                // Simple SELECT QUERYS
                if (userInput == one)
                {
                    sqlStudent MyS1 = new sqlStudent();
                    MyS1.StudentSelectOutput();
                }
                else if (userInput == two)
                {
                    sqlTrainer MyT1 = new sqlTrainer();
                    MyT1.TrainerSelectOutput();
                }
                else if (userInput == three)
                {
                    sqlAssignment MyA1 = new sqlAssignment();
                    MyA1.AssignmentSelectOutput();
                }
                else if (userInput == four)
                {
                    sqlCourse MyC1 = new sqlCourse();
                    MyC1.CourseSelectOutput();
                }

                // Exit and Wrong Input Cases
                else if (userInput == e)
                {
                    Console.ForegroundColor = ConsoleColor.Red;
                    Console.WriteLine("EXIT");
                    Console.ForegroundColor = ConsoleColor.White;
                }
                else
                {
                    Console.ForegroundColor = ConsoleColor.DarkRed;
                    Console.WriteLine("Unindentified Input, Please Choose Again");
                    Console.ForegroundColor = ConsoleColor.White;
                }
            }
        }
        public void InsertIntoAss()
        {
            // Display ASSIGNMENTS
            Console.ForegroundColor = ConsoleColor.DarkRed;
            Console.WriteLine("#==========================================================================#");
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine($"|                           EXISTING ASSIGNMENTS                           |");
            Console.ForegroundColor = ConsoleColor.DarkRed;
            Console.WriteLine("#==========================================================================#");
            Console.ForegroundColor = ConsoleColor.White;
            sqlAssignment MyA2 = new sqlAssignment();

            MyA2.AssignmentSelectOutput();

            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine($"< TIP: Insert a 5 Character KEY (example: ASA19) >");
            Console.ForegroundColor = ConsoleColor.DarkRed;
            Console.WriteLine("----------------------------------------------------------------------------");
            Console.ForegroundColor = ConsoleColor.White;
            Console.Write("Input Assignment Title: ");
            AssTitle = Console.ReadLine();

            // Display COURSES
            Console.ForegroundColor = ConsoleColor.DarkRed;
            Console.WriteLine("#==========================================================================#");
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine($"|                            EXISTING COURSES                              |");
            Console.ForegroundColor = ConsoleColor.DarkRed;
            Console.WriteLine("#==========================================================================#");
            Console.ForegroundColor = ConsoleColor.White;
            sqlCourse MyC2 = new sqlCourse();

            MyC2.CourseSelectOutput();

            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine($"< TIP: Choose from the existing Courses Table Above >");
            Console.ForegroundColor = ConsoleColor.DarkRed;
            Console.WriteLine("----------------------------------------------------------------------------");
            Console.ForegroundColor = ConsoleColor.White;
            Console.Write("Input Course Title: ");
            CourseTitleA = Console.ReadLine();

            Console.Write("Input Assignment Description: ");
            Description = Console.ReadLine();

            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine($"< TIP: Insert Format YYYY/MM/DD (example: 2010/01/25) >");
            Console.ForegroundColor = ConsoleColor.DarkRed;
            Console.WriteLine("----------------------------------------------------------------------------");
            Console.ForegroundColor = ConsoleColor.White;
            Console.Write("Input Subscription Date: ");
            Subscription = Console.ReadLine();

            Console.Write("Input Oral Mark: ");
            OralMark = Console.ReadLine();
            Console.Write("Input Total Mark: ");
            TotalMark = Console.ReadLine();


            string sqlInsertAss =
                "INSERT INTO Assignment(AssTitle, CourseTitleA, Description, Subscription, OralMark, TotalMark) " +
                "VALUES (@asstitle, @coursetitle, @description, @sub, @oralmark, @totalmark)";

            try
            {
                using (SqlConnection conn = new SqlConnection(ConnectionString.connection))
                {
                    conn.Open();

                    using (SqlCommand cmInsert = new SqlCommand(sqlInsertAss, conn))
                    {
                        cmInsert.Parameters.Add(new SqlParameter("asstitle", AssTitle));
                        cmInsert.Parameters.Add(new SqlParameter("coursetitle", CourseTitleA));
                        cmInsert.Parameters.Add(new SqlParameter("description", Description));
                        cmInsert.Parameters.Add(new SqlParameter("sub", Subscription));
                        cmInsert.Parameters.Add(new SqlParameter("oralmark", OralMark));
                        cmInsert.Parameters.Add(new SqlParameter("totalmark", TotalMark));

                        int rowsAffected = cmInsert.ExecuteNonQuery();

                        // Display A message for the Inserted ASSIGNMENT
                        Console.ForegroundColor = ConsoleColor.DarkRed;
                        Console.WriteLine("#==========================================================================#");
                        Console.ForegroundColor = ConsoleColor.Red;
                        Console.WriteLine($"|             Assignments Inserted Succesfully: {rowsAffected,-26} |");
                        Console.ForegroundColor = ConsoleColor.DarkRed;
                        Console.WriteLine("#==========================================================================#");
                        Console.ForegroundColor = ConsoleColor.White;

                        // Bring the Table ASSIGNMENT to see our newly Input ASSIGNMENT
                        sqlAssignment MyIA1 = new sqlAssignment();
                        MyIA1.AssignmentSelectOutput();

                        // Again, Show the Inserted ASSIGNMENT
                        Console.ForegroundColor = ConsoleColor.DarkRed;
                        Console.WriteLine("#==========================================================================#");
                        Console.ForegroundColor = ConsoleColor.Red;
                        Console.WriteLine($"|             Assignments Inserted Succesfully: {rowsAffected,-26} |");
                        Console.ForegroundColor = ConsoleColor.DarkRed;
                        Console.WriteLine("#==========================================================================#");
                        Console.ForegroundColor = ConsoleColor.White;
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }