با سلام.

در view کد زیر رو نوشتم:

 @using (Html.BeginForm("GoToView", "Admin", FormMethod.Get, new { @class = "form-horizontal", role = "form" }))
                        {
                            @Html.AntiForgeryToken()
                            @*<input type="hidden" name="Item" value="CreateKelass" />*@
                            <button type="submit" class="btn btn-success">ایجاد کلاس </button>
                        
                        }

در action هم کد زیر رو نوشتم:

 [NonAction]
        //[HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult GoToView(string Item)
        {
            if (Item == "CreateClassDars")
            {
                var selectTeacherName = (from t in talash.Tbl_User
                                         join tp in talash.Tbl_TeacherPayeh on t.UserID equals tp.TeacherID_UserID_
                                         where tp.Active == true
                                         select new { UserID = t.UserID, teacherName = t.name + " " + t.Family }).Distinct().ToList();
                var SelectActiveSal = from f in talash.Tbl_Sal where f.Active == true select new { f.SalID, f.SaleName };
                TempData["Sal"] = SelectActiveSal.FirstOrDefault().SaleName + "," + SelectActiveSal.FirstOrDefault().SalID;

                TempData["Teacher"] = new SelectList(selectTeacherName, "UserID", "teacherName", 1);
                TempData["Time"] = new SelectList(talash.Tbl_Time, "TimeID", "Title", 1);
                TempData["Makan"] = new SelectList(talash.Tbl_Makan, "MakanID", "Title", 1);
                TempData["Rooz"] = new SelectList(talash.Tbl_Rooz, "RoozID", "RoozName", 1);

                TempData["Paye"] = new SelectList(talash.Tbl_Payeha, "PayehID", "PayehName", 1);
                TempData["darsha"] = new SelectList(talash.Tbl_Doros, "DarsID", "DarsName", 1);

            }
            if (Item == "CreateClassFoghBarname")
            {
                var selectTeacherName = (from t in talash.Tbl_User
                                         join tp in talash.Tbl_TeacherPayeh on t.UserID equals tp.TeacherID_UserID_
                                         where tp.Active == true
                                         select new { UserID = t.UserID, teacherName = t.name + " " + t.Family }).Distinct().ToList();
                var SelectActiveSal = from f in talash.Tbl_Sal where f.Active == true select new { f.SalID, f.SaleName };
                TempData["Sal"] = SelectActiveSal.FirstOrDefault().SaleName + "," + SelectActiveSal.FirstOrDefault().SalID;

                TempData["Teacher"] = new SelectList(selectTeacherName, "UserID", "teacherName", 1);
                TempData["Time"] = new SelectList(talash.Tbl_Time, "TimeID", "Title", 1);
                TempData["Makan"] = new SelectList(talash.Tbl_Makan, "MakanID", "Title", 1);
                TempData["Rooz"] = new SelectList(talash.Tbl_Rooz, "RoozID", "RoozName", 1);

                TempData["Paye"] = new SelectList(talash.Tbl_Payeha, "PayehID", "PayehName", 1);
                TempData["darsha"] = new SelectList(talash.Tbl_DefinitionFoghBarname, "FoghbarnmeID", "FoghbarnmeName", 1);

            }
            if (Item == "CreateBranch")
            {
                TempData["Paye"] = new SelectList(talash.Tbl_Payeha, "PayehID", "PayehName", 1);
                TempData["Sal"] = new SelectList(talash.Tbl_Sal, "SalID", "SaleName", 1);
            }
            if (Item == "CreateQuestion")
            {
                TempData["TypeSoal"] = new SelectList(talash.Tbl_SoalType, "SoalTypeID", "SoalTypeName", 1);
                TempData["Dars"] = new SelectList(talash.Tbl_Doros, "DarsID", "DarsName", 1);
                TempData["Paye"] = new SelectList(talash.Tbl_Payeha, "PayehID", "PayehName", 1);
            }
            if (Item == "CreateSaleTahsily")
            {
                PersianCalendar pc = new PersianCalendar();
                int currentyear = pc.GetYear(DateTime.Now);
                int NextYear = currentyear + 1;
                TempData["year"] = currentyear.ToString() + "," + NextYear.ToString();
            }
            TempData["Menu"] = Item;
            return RedirectToAction("Kelasha");
        }

وقتی روی  دکمه کلیک می کنم تا به action بره پیغام زیر میاد:

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