public IActionResult ForgotPw(ForgotPasswordViewModel model)
        {
            if (ModelState.IsValid)
            {
                var ad = adHelper.GetAllUsers();

                var user = ad.Find(x => x.Email.ToLower() == model.Email.ToLower());

                if (user == null)
                {
                    return(RedirectToAction(nameof(ForgotPasswordConfirmation)));
                }
                else
                {
                    MailMessage mail = new MailMessage

                    {
                        Subject = "mokkamoi!!",

                        From = new MailAddress("*****@*****.**")
                    };
                    ApplicationUser userA = new ApplicationUser();

                    userA.UserName = user.Username;
                    Guid   g          = Guid.NewGuid();
                    string GuidString = Convert.ToBase64String(g.ToByteArray());
                    GuidString = GuidString.Replace("=", "");
                    GuidString = GuidString.Replace("+", "");
                    var callbackUrl = Url.ResetPasswordCallbackLink(user.Username, GuidString, Request.Scheme);

                    try
                    {
                        PasswordCode result = (from p in _context.PasswordCode
                                               where p.Username == user.Username
                                               select p).SingleOrDefault();
                        if (result == null)//jos käyttäjä ei ole ennen tehnyt salasananpalautusta tehdään uusi passwordcode
                        {
                            result = new PasswordCode
                            {
                                Username = user.Username
                            };
                        }
                        result.Code      = GuidString;// tallennetaan käyttäjälle salasanan palautus tiedot
                        result.IsUsed    = false;
                        result.TimeStamp = DateTime.Now;
                        _context.Update(result);

                        _context.SaveChanges();
                    }
                    catch (Exception) { }

                    mail.To.Add(user.Email);
                    mail.Body       = $"Reset password link: {callbackUrl}";
                    mail.IsBodyHtml = true;

                    adHelper.SendMail(mail, user.Email);
                }

                return(RedirectToAction(nameof(ForgotPasswordConfirmation)));
            }

            // If we got this far, something failed, redisplay form
            return(View());
        }