public void OnGet()
{
var courseDao = new CourseDao();
Courses = courseDao.GetAll();
var subjectDao = new SubjectDao();
Subjects = subjectDao.GetAll();
}
public JsonResult ExsitsCourseName(string cou_Coursename, int?cou_id)
{
CourseDao dao = new CourseDao();
List <course> lts_cou = dao.GetAll();
if (cou_id != null)
{
lts_cou.Remove(dao.GetById(cou_id)); //////////////??????????????????????
}
return(Json(!lts_cou.Any(x => x.co_name.Trim().ToLower() == cou_Coursename.Trim().ToLower()), JsonRequestBehavior.AllowGet));
}