Asp.net mvc 密码恢复MVC 5:UserManager.GenerateEmailConfirmationTokenAsync在ASP.NET中不可用

我试图使用Rick Anderson的示例实现PassSwarm重置令牌

当我在自己的应用程序中尝试忘记密码控制器的代码时，我没有选择UserManager.GenerateEmailConfirmationTokenAsync的选项。有人遇到过这种情况吗？我使用的是MVC5。这是否可能是Visual Studio版本/更新问题？我使用的是VS 2013版本12.0.21005.1 REL

谢谢

桑耶夫

public async Task<ActionResult> ForgotPassword(ForgotPasswordViewModel model)
{
    if (ModelState.IsValid)
    {
        var user = await UserManager.FindByNameAsync(model.Email);
        if (user == null || !(await UserManager.IsEmailConfirmedAsync(user.Id)))
        {
            // Don't reveal that the user does not exist or is not confirmed
            return View("ForgotPasswordConfirmation");
        }

        var code = await UserManager.GeneratePasswordResetTokenAsync(user.Id);
        var callbackUrl = Url.Action("ResetPassword", "Account", 
        new { UserId = user.Id, code = code }, protocol: Request.Url.Scheme);
        await UserManager.SendEmailAsync(user.Id, "Reset Password", 
        "Please reset your password by clicking here: <a href=\"" + callbackUrl + "\">link</a>");        
        return View("ForgotPasswordConfirmation");
    }

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

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好的，问题是我必须安装Visual Studio Update 2。现在GeneratePasswordResetToken选项显示在UserManager下