public async Task <IActionResult> ConfirmEmail(string userId, string token) { if (userId == null || token == null) { return(RedirectToAction("index", "Home")); } var user = await Usermanager.FindByIdAsync(userId); if (user == null) { ViewBag.ErrorMessage = $"The User ID {userId} is invalid"; return(View("NotFound")); } var result = await Usermanager.ConfirmEmailAsync(user, token); if (result.Succeeded) { string str = await ViewToStringRenderer.RenderViewToStringAsync(HttpContext.RequestServices, $"~/Views/Template/Welcome.cshtml", user.FullName); await _emailSender.SendEmailAsync(user.Email, "Welcome To Mobile Store", str); return(View("EmailConfirmed")); } ViewBag.ErrorTitle = "Email cannot be confirmed"; return(View("Error")); }