//передавая ид ответа, получаю текущее значение проголосовавших за этот ответ 
        public Variants_ansvers GetCurrentVote(int id)
        {       
            return _db.Variants_ansvers.Single(ans => ans.id_ansver == id);
        }

        //добавить голос
        public void SaveVote(Variants_ansvers obj)
        {       
            Variants_ansvers old = GetCurrentVote(1);
            old.vote = obj.vote +1;
           
            _db.SaveChanges();
        }

        //добавить голос
        public void SaveVote(int answerId)
        {       
            Variants_ansvers old = GetCurrentVote(answerId);
            old.vote++;
           
            _db.SaveChanges();
        }

  [HttpPost]
        public ActionResult Thanks(FormCollection id) // //Variants_ansvers obj
        {

 
            //Добавить +1 в БД
            if (ModelState.IsValid)
            {


                int idd = 0;

                switch (Convert.ToInt32(id["Vote"]))
                {
                    case 1:
                        idd = 1;
                        break;

                    case 2:
                        idd = 2;
                        break;

                    case 3:
                        idd = 3;
                        break;
                } 

               

                PoollsDataManager db = new PoollsDataManager();
                db.SaveVote(idd); //вызываем метод добавить голос

                return RedirectToAction("Index");
            }

            else
            {
                //ViewBag.Ret = "Спасибо за выбор: " + a;

                return View();
            }
          }

           public ActionResult Thanks(int? answerId) 
           {
                if(answerId.HasValue)
                {
                    var old = GetCurrentVote(answerId);
                    old.vote++;
                    _db.SaveChanges();

                    return RedirectToAction("Sucess");
                }
                return View();
            }

@using (Html.BeginForm("Thanks", "Home"))
{

<table width="400pixels" border="1" cellspacing="4" cellpadding="4" align="center">
<tbody>    
    
    @foreach (Votes.Models.Variants_ansvers item in Model)
    {
        <tr>

        @{
            string id = Convert.ToString(@item.id_ansver);
        
            <td></td>   <td align="left">@Html.RadioButton("Vote", id, false) <span>@item.variant_ansver</span> </td>  <td>@item.vote   Гол</td>
        }
        </tr>
    }

</tbody></table>


<input type="submit" value="Подтвердить" />
}

        public void SaveVote(int answerId, string Comment)
        {
            Variants_ansvers old = GetCurrentVote(answerId);
            Comment Comm = GetComments(); 

            old.vote++;
            if (Comment != "") { Comm. ? "ds"; }

            _db.SaveChanges();
          
        }

using(var tt= new dbcontext())
{
var _poll = (from _p in tt.Poll join from _a in _p.Ansvers where _a.id=ansverId select _p);
_poll.Comment.Add(new Comment{ Comment1 = "hello world"});
tt.SaveChanges();
}

_db.Comments.add(new Comment())

            if (Comment != "") 
                {
                    Comment Comm = new Models.Comment();
                    Comm.Comment1 = Comment;
                    Comm.id_comment = 1;
                    _db.AddToComments(Comm);
               }