public ActionResult UserRoles(SelectUserRolesViewModel model) { if (ModelState.IsValid) { var idManager = new ApplicationDbContext.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()); }