Using UserManager to change the email of a user

Question

I am trying to implement a feature to change the email of a user. Asp net core identity by default allows the user to change an email however it requires a confirmation link. I was wondering if it was possible to not use the confirmation link and just edit the function to update the email of the user with the new email. Thanks in advance

I have tried doing

 await _userManager.ChangeEmailAsync(user, Input.NewEmail, code);

and

var changingser = _userManager.Users.First(u => u.Email.Equals(email));
changingser.Email = Input.NewEmail;

Which did not seem to work

Email.cshtml: Change Email function

    public async Task<IActionResult> OnPostChangeEmailAsync()
    {
        var user = await _userManager.GetUserAsync(User);
        if (user == null)
        {
            return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
        }

        if (!ModelState.IsValid)
        {
            await LoadAsync(user);
            return Page();
        }

        var email = await _userManager.GetEmailAsync(user);
        if (Input.NewEmail != email)
        {
            var userId = await _userManager.GetUserIdAsync(user);
            var code = await _userManager.GenerateChangeEmailTokenAsync(user, Input.NewEmail);
            code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));

            await _userManager.ChangeEmailAsync(user, Input.NewEmail, code);

/*                var callbackUrl = Url.Page(
                    "/Account/ConfirmEmailChange",
                    pageHandler: null,
                    values: new { userId = userId, email = Input.NewEmail, code = code },
                    protocol: Request.Scheme);*/

                //await _emailSender.SendEmailAsync(
                //    Input.NewEmail,
                //    "Confirm your email",
                //    $"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");

            StatusMessage = "Email has been changed";
            return RedirectToPage();
        }

        StatusMessage = "Your email is unchanged.";
        return RedirectToPage();
    }

Edit: Failed invalid token?

Answer 1

Yes, you can.

Use SetEmailAsync to see the user email.
This will still require the email to be 'confirmed' so generate a token, then immediately confirm the new email address.

Something like:

await _userManager.SetEmailAsync(user, Input.NewEmail);

var token = await _userManager.GenerateEmailConfirmationTokenAsync(existingUser);

await _userManager.ConfirmEmailAsync(existingUser, token);