mvc3中 返回的时候能返回个窗口吗
         public ActionResult Add(BuyerEmployeeDTO model)
        {
            if (ModelState.IsValid)
            {
                BuyerEmployeeDTO sellerModel = (BuyerEmployeeDTO)SystemUser.SellerGetUser().Model;
                model.BuyerId = sellerModel.BuyerId;
                if (model.Account == sellerModel.Account)
                {                    return Content(Message.Show(PlatForm.AccountYes,PageName.BuyerEmployeeAdd));
                }
                else
                {
                    ReturnMessage rm = _interfaceace.AddBuyerEmployee(model);
                    if (rm.IsSuccess)
                    {
                        return Content(Message.Show(PlatForm.AddSuccess, returnUrl));
                    }
                    else
                    {
                        return Content(Message.Show(PlatForm.AddFailure, PageName.BuyerEmployeeAdd));(我就是想在本页面弹出个窗口,可是每次都跳了出去)
                    }
                }
            }
            else
            {
                InitModel(model);
            }我是新手  可能说的不是很清楚。mvc