public async Task <IActionResult> OnPostAsync(string returnUrl = null) { returnUrl = returnUrl ?? Url.Content("~/"); if (ModelState.IsValid) { bool NotBot = _captcha.ValidateCaptchaCode(Input.CaptchaCode, HttpContext); if (NotBot) { IdentityUser user = new IdentityUser { UserName = Input.Email, Email = Input.Email }; IdentityResult result = await _userManager.CreateAsync(user, Input.Password); if (result.Succeeded) { _logger.LogInformation("User created a new account with password."); var code = await _userManager.GenerateEmailConfirmationTokenAsync(user); var callbackUrl = Url.Page( "/Account/ConfirmEmail", pageHandler: null, values: new { userId = user.Id, code = code }, protocol: Request.Scheme); await _emailSender.SendEmailAsync(Input.Email, "Confirm your email", $"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>."); return(RedirectToPage("./CheckEmail")); } foreach (var error in result.Errors) { ModelState.AddModelError(string.Empty, error.Description); } } } else { //Page for not working } return(Page()); }