public ActionResult AddMeeting(MeetingModel model)
        {
            NameMeetingEvent meeting = new NameMeetingEvent
            {
                NameEvent = model.NameEvent
            };

            _context.MeetingEvents.Add(meeting);
            _context.SaveChanges();

            int a = _context.MeetingEvents.Count();

            if (model.HeaderEvent.Count() > 0 && model.NameEvent.Count() > 0)
            {
                for (int i = 0; i < model.HeaderEvent.Count; i++)
                {
                    MeetingInformation information = new MeetingInformation
                    {
                        MeetingID = _context.MeetingEvents.Count(),
                        Header    = model.HeaderEvent[i],
                        Context   = model.ContextEvent[i]
                    };
                    _context.MeetingInformations.Add(information);
                    _context.SaveChanges();
                }
            }
            return(RedirectToAction("GetAllMeeting"));
        }
        public IActionResult GetInfoAboutMeeting(int?EventId)
        {
            NameMeetingEvent SelectedMeeting = _context.MeetingEvents.Single(p => p.Id == EventId);

            List <MeetingInformation> SelectedMeetingInfo = new List <MeetingInformation>();

            foreach (var element in _context.MeetingInformations)
            {
                if (element.MeetingID == SelectedMeeting.Id)
                {
                    SelectedMeetingInfo.Add(element);
                }
            }

            ViewBag.EventId = EventId; //I'm sorry for ViewBag :(
            return(View(SelectedMeetingInfo));
        }