public ActionResult CourseSearchByMajorOrCourseNo(CourseSearchViewModels obj)
        {
            string maja = Enum.GetName(typeof(Major), obj.Major);
            string cn   = obj.Number;

            if (cn == null && maja != null)
            {
                return(PartialView("_CourseSearchPartial", c.GetCourseByMajor(maja)));
            }
            else
            {
                return(PartialView("_CourseSearchPartial", c.GetCourseByNumber(cn)));
            }
        }