public ActionResult ForgetPasswordDone(ForgetPasswordModel model)
 {
     return View(model);
 }
        public ActionResult ForgetPassword(ForgetPasswordModel model, string returnUrl)
        {
            if (ModelState.IsValid)
            {
                var username = Membership.GetUserNameByEmail(model.Email);
                if (!string.IsNullOrEmpty(username))
                {
                    var user = Membership.GetUser(username, false);
                    if (user.Email == model.Email)
                    {
                        EmailAdmin.SendResetPasswordLink(user.Email, user.UserName, ResetPasswordModel.CookResetHash(user.UserName));
                        if (!String.IsNullOrEmpty(returnUrl))
                        {
                            return Redirect(returnUrl);
                        }
                        else
                        {
                            return RedirectToAction("ForgetPasswordDone", model);
                        }
                    }
                    else
                    {
                        ModelState.AddModelError("", "用户名与邮箱地址不匹配。");
                    }
                }
                else
                {
                    ModelState.AddModelError("", "用户名不存在。");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }