public ActionResult Edit(HouseholdUser householdUser) {

            var household = db.HouseHoldData.Find(householdUser.HouseHolds.Id);

            HouseholdUserHelper helper = new HouseholdUserHelper();
            household.Users.Clear();

            foreach(var memberid in householdUser.SelectedMembers) {
                helper.AddMemberToHousehold(memberid, household.Id);
            }

            db.SaveChanges();
            return RedirectToAction("Index");
        }
        // GET: HouseHolds/Edit/5
        public ActionResult Edit(int? id) {
            if(id == null) {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }

            var householdId = db.HouseHoldData.Find(id);
            var selected = householdId.Users.Select(u => u.Id);

            HouseholdUser householdMembers = new HouseholdUser() {
                Members = new MultiSelectList(db.Users, "Id", "DisplayName", selected),
                HouseHolds = householdId
            };

            return View(householdMembers);
        }