public ActionResult Create(Activity activity, string datepicker, string cities)
        {
            if (ModelState.IsValid)
            {
                var id = WebSecurity.CurrentUserId;
                var companyId = db.Company.Where(a=> a.Person.UserId == id).FirstOrDefault().Id;
                DateTime time = Convert.ToDateTime(activity.Time);
                activity.Date = Convert.ToDateTime(datepicker);
                activity.Date = activity.Date.Add(time.TimeOfDay);
                activity.CompanyId = companyId;
                activity.CityId = int.Parse(cities);
                db.Activity.Add(activity);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(activity);
        }
        public ActionResult Print(int activityId = 0)
        {
            Activity activity = db.Activity.Find(activityId);
            if (activity == null)
            {
                return HttpNotFound();
            }

            Activity act = new Activity() {};
            return PartialView(activity);
        }
 public ActionResult Edit(Activity activity, DateTime datepicker, string cities)
 {
     if (ModelState.IsValid)
     {
         activity.Date = datepicker;
         activity.CityId = int.Parse(cities);
         db.Entry(activity).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     return View(activity);
 }