public ActionResult Attend(int id = 0)
{
if (id == 0 || !Permission.LoginedNeed(Request, Response, Session))
{
return(null);
}
Exam exam = ExamView.GetExamById(id);
if (exam == null || DateTime.Now < exam.start_date || DateTime.Now > exam.end_date)
{
Permission.BackToPrevPageOrIndex(Request, Response);
return(null);
}
User user = (User)Session["user"];
List <int> userGroups = GroupView.GetGroupMemberByUID(user.uid).Select(gm => (int)gm.gid).ToList();
IQueryable <int> examGroups = ExamView.GetAllGroupsByExam(exam.eid).Select(e => e.gid);
List <int> gids = userGroups.Intersect(examGroups).ToList();
if ((exam._public == false && gids.Count() == 0) || ResultView.GetResult(id, user.uid) != null)
{
Permission.BackToPrevPageOrIndex(Request, Response);
return(null);
}
ViewBag.exam = exam;
ViewBag.questions = FileOperation.ReadFile(exam.exam_path);
return(View());
}