public async Task<IActionResult> ConfirmEmail(string userId, string code)
{
if (userId == null || code == null)
{
return View("Error");
}
var user = await _userManager.FindByIdAsync(userId);
if (user == null)
{
return View("Error");
}
var result = await _userManager.ConfirmEmailAsync(user, code);
return View(result.Succeeded ? "ConfirmEmail" : "Error");
}