public ActionResult AddOrUpdateCourse(bool isNew, string courseId, string subject, string category, string title, int minCredits, int maxCredits, bool specialApproval)
{
Dal db = new Dal();
Course course = new Course();
course.CourseId = courseId;
course.Subject = subject;
course.Category = category;
course.Title = title;
course.MinCredits = minCredits;
course.MaxCredits = maxCredits;
course.SpecialApproval = specialApproval;
int result = db.AddOrUpdateCourse(isNew, course);
return(Json(new { result = result.ToString() }, JsonRequestBehavior.AllowGet));
}