public async Task<IActionResult> AddPhoneNumber(AddPhoneNumberViewModel model)
 {
     if (!ModelState.IsValid)
     {
         return View(model);
     }
     var user = await GetCurrentUserAsync();
     // Generate the token and send it
     var code = await UserManager.GenerateChangePhoneNumberTokenAsync(user, model.Number);
     await MessageServices.SendSmsAsync(model.Number, "Your security code is: " + code);
     return RedirectToAction("VerifyPhoneNumber", new { PhoneNumber = model.Number });
 }

 public async Task<ActionResult> AddPhoneNumber(AddPhoneNumberViewModel model)
 {
     if (!this.ModelState.IsValid)
     {
         return this.View(model);
     }
     // Generate the token and send it
     var code = await this.UserManager.GenerateChangePhoneNumberTokenAsync(this.User.Identity.GetUserId(), model.Number);
     if (this.UserManager.SmsService != null)
     {
         var message = new IdentityMessage
         {
             Destination = model.Number,
             Body = "Your security code is: " + code
         };
         await this.UserManager.SmsService.SendAsync(message);
     }
     return this.RedirectToAction("VerifyPhoneNumber", new { PhoneNumber = model.Number });
 }

 public async Task<ActionResult> AddPhoneNumber(AddPhoneNumberViewModel model)
 {
     if (!ModelState.IsValid)
     {
         return View(model);
     }
     // Generar el token y enviarlo
     var code = await UserManager.GenerateChangePhoneNumberTokenAsync(User.Identity.GetUserId(), model.Number);
     if (UserManager.SmsService != null)
     {
         var message = new IdentityMessage
         {
             Destination = model.Number,
             Body = "Su código de seguridad es: " + code
         };
         await UserManager.SmsService.SendAsync(message);
     }
     return RedirectToAction("VerifyPhoneNumber", new { PhoneNumber = model.Number });
 }

 public async Task<IActionResult> AddPhoneNumber(AddPhoneNumberViewModel model)
 {
     if (!ModelState.IsValid)
     {
         return View(model);
     }
     // Generate the token and send it
     var user = await GetCurrentUserAsync();
     if (user == null)
     {
         return View("Error");
     }
     var code = await _userManager.GenerateChangePhoneNumberTokenAsync(user, model.PhoneNumber);
     await _smsSender.SendSmsAsync(model.PhoneNumber, "Your security code is: " + code);
     return RedirectToAction(nameof(VerifyPhoneNumber), new { PhoneNumber = model.PhoneNumber });
 }

        public async Task<ActionResult> AddPhoneNumber(AddPhoneNumberViewModel model)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            // Generate the token and send it
            string code = await _userManager.GenerateChangePhoneNumberTokenAsync(
                User.Identity.GetUserId2<ObjectId>(), model.Number);

            if (_userManager.SmsService != null)
            {
                string bodyFormat = IdentityResourceHelper.Load(IdentitySettings.IdentityResource, "Notify_AddPhoneNumber_Body");
                var message = new IdentityMessage
                {
                    Destination = model.Number,
                    Body = string.Format(bodyFormat, code)
                };
                await _userManager.SmsService.SendAsync(message);
            }
            return RedirectToAction("VerifyPhoneNumber", new { PhoneNumber = model.Number });
        }

 //
 // GET: /Manage/AddPhoneNumber
 public ActionResult AddPhoneNumber()
 {
     AddPhoneNumberViewModel model = new AddPhoneNumberViewModel();
     model.Number = UserManager.GetPhoneNumber(User.Identity.GetUserId());
     return View(model);
 }

        public async Task<ActionResult> AddPhoneNumber(AddPhoneNumberViewModel model)
        {
            if (!string.IsNullOrWhiteSpace(model.Number))
            {
                model.Number = model.Number.Replace(" ", "");

                if (model.Number.Length == 8)
                {
                    model.Number = "+45" + model.Number;
                }
            }

            if (!ModelState.IsValid)
            {
                return View(model);
            }
            // Send result of: UserManager.GetPhoneNumberCodeAsync(User.Identity.GetUserId(), phoneNumber);
            // Generate the token and send it
            var code = await UserManager.GenerateChangePhoneNumberTokenAsync(User.Identity.GetUserId(), model.Number);
            if (UserManager.SmsService != null)
            {
                var message = new IdentityMessage
                {
                    Destination = model.Number,
                    Body = "Your security code is: " + code
                };
                await UserManager.SmsService.SendAsync(message);
            }
            return RedirectToAction("VerifyPhoneNumber", new { PhoneNumber = model.Number });
        }

        public async Task<IActionResult> AddPhoneNumber(AddPhoneNumberViewModel model)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            // Generate the token and send it
            await GenerateChangePhoneNumberTokenAndSendAccountSecurityTokenSms(await GetCurrentUser(), model.PhoneNumber);
            return RedirectToAction(nameof(VerifyPhoneNumber), new { model.PhoneNumber });
        }