public async Task <IActionResult> OnPostAsync()
        {
            if (ModelState.IsValid)
            {
                var user = await _userManager.FindByEmailAsync(Input.Email);

                if (user == null || !(await _userManager.IsEmailConfirmedAsync(user)))
                {
                    // Don't reveal that the user does not exist or is not confirmed
                    return(RedirectToPage("./ForgotPasswordConfirmation"));
                }

                // For more information on how to enable account confirmation and password reset please
                // visit https://go.microsoft.com/fwlink/?LinkID=532713
                var code = await _userManager.GeneratePasswordResetTokenAsync(user);

                var callbackUrl = Url.ResetPasswordCallbackLink(user.Id.ToString(), code, Request.Scheme);
                await _emailSender.SendResetPasswordAsync(Input.Email, callbackUrl);

                return(RedirectToPage("./ForgotPasswordConfirmation"));
            }

            return(Page());
        }