public async Task <ActionResult> SellerRegister(FormCollection form, Wx_SellerRegisterViewModel model)
        {
            if (ModelState.IsValid)
            {
                var user = UserManager.FindByName(User.Identity.Name);
                user.DefaultSystemId = model.Systemid;
                user.OffSalesSystem  = model.Systemid.ToString();
                UserManager.Update(user);
                user.NickName = model.NickName;
                UserManager.Update(user);
                await UserManager.AddToRoleAsync(user.Id, "Staff");

                //Roles.AddUserToRole(user.UserName, "Seller");
                Off_Membership_Bind ofb = new Off_Membership_Bind()
                {
                    ApplicationDate = DateTime.Now,
                    Bind            = false,
                    Mobile          = user.UserName,
                    NickName        = model.NickName,
                    UserName        = user.UserName,
                    Off_System_Id   = model.Systemid,
                    Type            = 2
                };
                _offlineDB.Off_Membership_Bind.Add(ofb);
                await _offlineDB.SaveChangesAsync();

                return(RedirectToAction("Home"));
            }
            else
            {
                ModelState.AddModelError("", "注册失败");
                return(View(model));
            }
        }
        public ActionResult SellerRegister(int systemid)
        {
            Wx_SellerRegisterViewModel model = new Wx_SellerRegisterViewModel();

            model.Systemid = systemid;
            return(View(model));
        }