public IActionResult Index()
        {
            List <Course>           courses    = (List <Course>)_coursedb.GetFiveCourses();
            List <LandingViewModel> courseList = new List <LandingViewModel>();

            foreach (Course entry in courses)
            {
                LandingViewModel viewCourse = new LandingViewModel()
                {
                    Name              = entry.Name,
                    TeacherName       = entry.TeacherFirstName + " " + entry.TeacherLastName,
                    EstimatedDuration = entry.EstimatedDuration,
                    Image             = entry.Image
                };
                courseList.Add(viewCourse);
            }
            return(View(courseList));
        }