public ActionResult Create([Bind(Include = "Id, Name")] Sponsor sponsors, string[] selectedTeams)
 {
     if (selectedTeams != null)
     {
         sponsors.Teams = new List <Team>();
         foreach (var team in selectedTeams)
         {
             sponsors.Teams.Add(service.ProcuraIdTeam(int.Parse(team)));
         }
     }
     if (ModelState.IsValid)
     {
         service.Adiciona(sponsors);
         return(RedirectToAction("Index"));
     }
     return(View(sponsors));
 }