c# - 没有注册 IUserTokenProvider

Question

我最近将我的申请表 1.0 的 Asp.Net Identity Core 更新到了 2.0。

有一些我想尝试的新功能，比如 GenerateEmailConfirmationToken 等

我正在使用 this项目作为引用。

当用户尝试注册时，我在执行 Register 的 Post 方法时出错

private readonly UserManager<ApplicationUser> _userManager;     

public ActionResult Register(RegisterViewModel model)
{
    if (ModelState.IsValid)
    {
        var ifUserEXists = _userManager.FindByName(model.EmailId);
        if (ifUserEXists == null) return View(model);
        var confirmationToken = _userRepository.CreateConfirmationToken();//this is how i'm generating token currently.                
        var result = _userRepository.CreateUser(model,confirmationToken);
        var user = _userManager.FindByName(model.EmailId);
        if (result)
        {
            var code = _userManager.GenerateEmailConfirmationToken(user.Id);//error here
            _userRepository.SendEmailConfirmation(model.EmailId, model.FirstName, confirmationToken);
            //Information("An email is sent to your email address. Please follow the link to activate your account.");
            return View("~/Views/Account/Thank_You_For_Registering.cshtml");
        }     
    }
    
    //Error("Sorry! email address already exists. Please try again with different email id.");
    ModelState.AddModelError(string.Empty, Resource.AccountController_Register_Sorry__User_already_exists__please_try_again_);
    return View(model);
}

行内

 var code = _userManager.GenerateEmailConfirmationToken(user.Id);

我收到错误提示:

No IUserTokenProvider is registered.

现在，我只想看看它生成什么样的代码。 我是否需要对继承自 IdentityUser 类的 ApplicationUser 类进行一些更改？

或者是否需要更改某些内容才能使这些功能正常工作？

Answer 1

您必须指定 UserTokenProvider 才能生成 token 。

using Microsoft.Owin.Security.DataProtection;
using Microsoft.AspNet.Identity.Owin;
// ...

var provider = new DpapiDataProtectionProvider("SampleAppName");

var userManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>());

userManager.UserTokenProvider = new DataProtectorTokenProvider<ApplicationUser>(
    provider.Create("SampleTokenName"));

您还应该阅读这篇文章:Adding Two Factor Authentication to an Application Using ASP.NET Identity .