public ActionResult DangNhap(Nguoi_Dung_Objects ouser)
 {
     if (ModelState.IsValid)
     {
         var username = new Nguoi_Dung_BLL().GetElmentByUsername(ouser.user_name);
         if (username == null)
         {
             ModelState.AddModelError("user_name", "Tên đăng nhập không đúng");
         }
         var password = new Nguoi_Dung_BLL().GetElmentByPassword(ouser.password);
         if (password == null)
         {
             ModelState.AddModelError("password", "Mật khẩu không đúng");
         }
         if (username != null && password != null)
         {
             var phongban = new Nguoi_Dung_BLL().GetUserByMaPhongBan(ouser.user_name);
             var data     = new Nguoi_Dung_BLL().CheckLogin(ouser.user_name, ouser.password, phongban.ma_phong_ban);
             if (data != null)
             {
                 Session["ma_nhan_than"] = data.ma_so;
                 Session["ma_phong_ban"] = phongban.ma_phong_ban;
                 Session["username"]     = ouser.user_name;
                 if (phongban.ma_phong_ban == "1")
                 {
                     return(RedirectToAction("DanhSachPhamNhan", "Page"));
                 }
                 else
                 {
                     if (phongban.ma_phong_ban == "2")
                     {
                         return(RedirectToAction("TinhTrangPhamNhan", "Page", new { @id = ViewBag.ma_phong_ban }));
                     }
                     else
                     {
                         if (phongban.ma_phong_ban == "3")
                         {
                             return(RedirectToAction("DanhSachPhamNhan", "Page", new { @id = ViewBag.ma_phong_ban }));
                         }
                         else
                         {
                             if (phongban.ma_phong_ban == "4")
                             {
                                 return(RedirectToAction("DanhSachTuNhanDuocChamSocTrongNgay", "Page", new { @id = ViewBag.ma_phong_ban }));
                             }
                             else
                             {
                                 if (phongban.ma_phong_ban == "5")
                                 {
                                     return(RedirectToAction("DanhSachPhamNhanTiepNhanPhongThich", "Page", new { @id = ViewBag.ma_phong_ban }));
                                 }
                                 else
                                 {
                                     if (phongban.ma_phong_ban == "6")
                                     {
                                         return(RedirectToAction("GoiYKhauPhanAn", "Page", new { @id = ViewBag.ma_phong_ban }));
                                     }
                                     else
                                     {
                                         if (phongban.ma_phong_ban == "7")
                                         {
                                             return(RedirectToAction("DanhSachPhamNhan", "Page", new { @id = ViewBag.ma_phong_ban }));
                                         }
                                         else
                                         {
                                             if (phongban.ma_phong_ban == "8")
                                             {
                                                 return(RedirectToAction("TinhTrangCaiTao", "Page", new { @id = ViewBag.ma_phong_ban }));
                                             }
                                         }
                                     }
                                 }
                             }
                         }
                     }
                 }
             }
         }
     }
     return(View());
 }
        public ActionResult Index()
        {
            List <Nguoi_Dung_Objects> lst = new Nguoi_Dung_BLL().GetElements();

            return(View(lst));
        }