确认电子邮件时 ASP.NET Core 令牌无效但令牌似乎有效

Question

I have ASP.NET Core web api project and I need to confirm email. Everything is working fine and generated token and token received in ConfirmEmail() method are equal. Token seems valid but result gives invalid token:

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

Generating token:

        var code = await userManager.GenerateEmailConfirmationTokenAsync(user);
        var callbackUrl = Url.EmailConfirmationLink(user.Id, code, Request.Scheme);
        var email = user.Email;
        await emailSender.SendEmailConfirmationAsync(email, callbackUrl);

EmailConfirmationLink() and SendEmailConfirmationAsync() methods:

    public static string EmailConfirmationLink(this IUrlHelper urlHelper, string userId, string code, string scheme)
    {
        var result = urlHelper.Action(
            action: "ConfirmEmail",
            controller: "ApplicationUsers",
            values: new { userId, code },
            protocol: scheme);

        return result;
    }

    public static Task SendEmailConfirmationAsync(this IEmailSender emailSender, string email, string link)
    {
        return emailSender.SendEmailAsync(email, "Confirm your email",
            $"Please confirm your account by clicking this link: <a href='{HtmlEncoder.Default.Encode(link)}'>Confirm email</a>");
    }

ConfirmEmail() method:

    public async Task<IActionResult> ConfirmEmail(string userId, string code)
    {
            if (userId == null || code == null)
            {
                // ....
            }
            var user = await userManager.FindByIdAsync(userId);
            if (user == null)
            {
                throw new ApplicationException($"Unable to load user with ID '{userId}'.");
            }               
            var result = await userManager.ConfirmEmailAsync(user, code);

Answer 1

I was also having this issue and i tried the answers above and till got no luck. Setting the isHtml parameter to true in the SendAsync method fixed my problem.

_emailService.SendAsync(vm.Email, "Click the link below to validate.", $"<a href=\"{link}\">Validate email</a>",true);