public ActionResult Create([Bind(Include = "Id,FirstName,LastName,GroupId")] Trainee trainee)
        {
            if (ModelState.IsValid)
            {
                db.Trainees.Add(trainee);
                db.SaveChanges();
                return(RedirectToAction("Index"));
            }

            return(View(trainee));
        }
        public ActionResult Create([Bind(Include = "Id,Name,Description")] Group group)
        {
            if (ModelState.IsValid)
            {
                db.Groups.Add(group);
                db.SaveChanges();
                return(RedirectToAction("Index"));
            }

            return(View(group));
        }