Asp.NET Identity 2 giving “Invalid Token” error

Question

I\'m using Asp.Net-Identity-2 and I\'m trying to verify email verification code using the below method. But I am getting an \"Invalid Token\"

Answer 1

The following solution helped me in WebApi:

Registration

var result = await _userManager.CreateAsync(user, model.Password);

if (result.Succeeded) {
EmailService emailService = new EmailService();
var url = _configuration["ServiceName"];
var token = await _userManager.GenerateEmailConfirmationTokenAsync(user);
var encodedToken = HttpUtility.UrlEncode(token);

// .Net Core 2.1, Url.Action return null
// Url.Action("confirm", "account", new { userId = user.Id, code = token }, protocol: HttpContext.Request.Scheme);
var callbackUrl = _configuration["ServiceAddress"] + $"/account/confirm?userId={user.Id}&code={encodedToken}";
var message = emailService.GetRegisterMailTemplate(callbackUrl, url);

await emailService.SendEmailAsync( model.Email, $"please confirm your registration {url}", message );
}

Confirm

[Route("account/confirm")]
[AllowAnonymous]
[HttpGet]
public async Task ConfirmEmail(string userId, string code) {
  if (userId == null || code == null) {
    return Content(JsonConvert.SerializeObject( new { result = "false", message = "data is incorrect" }), "application/json");
  }

  var user = await _userManager.FindByIdAsync(userId);
  if (user == null) {
    return Content(JsonConvert.SerializeObject(new { result = "false", message = "user not found" }), "application/json");
  }

  //var decodedCode = HttpUtility.UrlDecode(code);
  //var result = await _userManager.ConfirmEmailAsync(user, decodedCode);

  var result = await _userManager.ConfirmEmailAsync(user, code);

  if (result.Succeeded)
    return Content(JsonConvert.SerializeObject(new { result = "true", message = "ок", token = code }), "application/json");
  else
    return Content(JsonConvert.SerializeObject(new { result = "false", message = "confirm error" }), "application/json");
}