问ASP.NET MVC4、互联网应用模板、SimpleMembership -帐户模型-强制使用唯一用户名和电子邮件

EN

    [HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
    public ActionResult Register(RegisterModel model)
    {
        if (ModelState.IsValid)
        {
            // Attempt to register the user
            using (EfDb db = new EfDb())
            {
                UserProfile userEmail = db.UserProfiles.FirstOrDefault(u => u.Email.ToLower() == model.Email.ToLower());
                try
                {
                    // Check if email already exists
                    if (userEmail == null)
                    {
                        var token = WebSecurity.CreateUserAndAccount(
                            model.UserName,
                            model.Password,
                                new
                                    {
                                        model.Email                                           
                                    },
                            true);
                        }
                    ModelState.AddModelError("", ErrorCodeToString(MembershipCreateStatus.DuplicateEmail));
                }
                catch (MembershipCreateUserException e)
                {
                    ModelState.AddModelError("", ErrorCodeToString(e.StatusCode));
                }
            }
        }
        // If we got this far, something failed, redisplay form
        return View(model);
    }

    [EmailAddress]
    [Required]
    [Display(Name = "Email")]
    public string Email { get; set; }

    <div class="editor-label">
        @Html.LabelFor(model => model.UserName)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.UserName)
        @Html.ValidationMessageFor(model => model.UserName)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.Email)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Email)
        @Html.ValidationMessageFor(model => model.Email)
    </div>