AspNetEmailExample.Controllers.AccountController.UserRoles C# (CSharp) Метод

        public ActionResult UserRoles(SelectUserRolesViewModel model)
        {
            if (ModelState.IsValid)
            {
                var idManager = new IdentityManager();
                var Db = new ApplicationDbContext();
                var user = Db.Users.First(u => u.UserName == model.UserName);
                idManager.ClearUserRoles(user.Id);
                foreach (var role in model.Roles)
                {
                    if (role.Selected)
                    {
                        idManager.AddUserToRole(user.Id, role.RoleName);
                    }
                }
                return RedirectToAction("index");
            }
            return View();
        }