public IActionResult Edit(User_activitetEditViewModel model)
        {
            if (ModelState.IsValid)
            {
                User_activitet user_activitet = _user_activitetRepository.GetUser_activitet(model.User_activitet_Id);

                user_activitet.Date_Time           = model.Date_Time;
                user_activitet.User_Id             = model.User_Id;
                user_activitet.Fuldnavn            = model.Fuldnavn;
                user_activitet.User_activitet_Navn = model.User_activitet_Navn;

                _user_activitetRepository.Update(user_activitet);
                return(RedirectToAction("List"));
            }
            return(View("~/Views/Views_User_activitet/Edit.cshtml"));
        }
        public ViewResult Edit(int id)
        {
            User_activitet user_activitet = _user_activitetRepository.GetUser_activitet(id);

            if (user_activitet == null)
            {
                Response.StatusCode = 404;
                return(View("~/Views/Views_User_activitet/User_activitetNotFound.cshtml", id));
            }
            User_activitetEditViewModel user_activitetEditViewModel = new User_activitetEditViewModel
            {
                User_activitet_Id   = user_activitet.User_activitet_Id,
                Date_Time           = user_activitet.Date_Time,
                User_Id             = user_activitet.User_Id,
                Fuldnavn            = user_activitet.Fuldnavn,
                User_activitet_Navn = user_activitet.User_activitet_Navn,
            };

            return(View("~/Views/Views_User_activitet/Edit.cshtml", user_activitetEditViewModel));
        }