public ActionResult Edit()
        {
            TeamsService teamsService = new TeamsService();

            TeamsEditVM model = new TeamsEditVM();
            TryUpdateModel(model);

            if (!ModelState.IsValid)
            {
                return View(model);
            }

            Team team;
            if (model.ID == 0)
            {
                team = new Team();
            }
            else
            {
                team = teamsService.GetByID(model.ID);
                if (team == null)
                {
                    return RedirectToAction("List");
                }
            }

            team.ID = model.ID;
            team.Name = model.Name;

            teamsService.Save(team);

            return RedirectToAction("List");
        }
        public ActionResult Edit(int? id)
        {
            TeamsService teamsService = new TeamsService();

            TeamsEditVM model = new TeamsEditVM();
            Team team;

            if (!id.HasValue)
            {
                team = new Team();
            }
            else
            {
                team = teamsService.GetByID(id.Value);
                if (team == null)
                {
                    return RedirectToAction("List");
                }
            }

            model.ID = team.ID;
            model.Name = team.Name;

            return View(model);
        }