public List <CourseModel> MostCheapestCourse() { List <CourseModel> mostExpCourses = new List <CourseModel>(); CourseDAO course = new CourseDAO(); List <Course> coursesCheap = course.MostCheapest(); foreach (Course courseExp in coursesCheap) { CourseModel newCourse = new CourseModel(); newCourse.Id = courseExp.Id; newCourse.Name = courseExp.Name; newCourse.Cost = courseExp.CourseCost; mostExpCourses.Add(newCourse); } return(mostExpCourses); }