private async Task LoadAsync(Core3IDUser user)
        {
            var userName = await _userManager.GetUserNameAsync(user);

            var phoneNumber = await _userManager.GetPhoneNumberAsync(user);

            Username = userName;

            Input = new InputModel
            {
                PhoneNumber = phoneNumber
            };
        }
        } // end public async Task<IActionResult> OnGetAsync(string id)
        public async Task<IActionResult> OnPostAsync([FromForm]RoleModificationViewModel model)
        {
            IdentityResult result;

            if (ModelState.IsValid)
            {
                if (model.IdsToAdd != null)  // Avoid null exception
                {
                    foreach (string addId in model.IdsToAdd)
                    {
                        Core3IDUser user = await userManager.FindByIdAsync(addId);
                        if (user == null)
                        {
                            return BadRequest(String.Format("User with Id, {0}, was not found and cannot be added to role, {1}.", addId, model.RoleName));
                        }
                        else
                        {
                            result = await userManager.AddToRoleAsync(user, model.RoleName);
                            if (!result.Succeeded)
                            {
                                AddErrorsFromResult(result);
                            } // endif (!result.Succeeded)
                        } // endif (user == null)
                    } // end foreach (string addId in model.IdsToAdd)
                } // endif (model.IdsToAdd != null)

                if (model.IdsToDelete != null)  // Avoid null exception
                {
                    foreach (string deleteId in model.IdsToDelete)
                    {
                        Core3IDUser user = await userManager.FindByIdAsync(deleteId);
                        if (user == null)
                        {
                            return BadRequest(String.Format("User with Id, {0}, was not found and cannot be deleted from role, {1}.", deleteId, model.RoleName));
                        }
                        else
                        {
                            result = await userManager.RemoveFromRoleAsync(user, model.RoleName);
                            if (!result.Succeeded)
                            {
                                AddErrorsFromResult(result);
                            } // endif (!result.Succeeded)
                        } // endif (user == null)
                    } // end foreach (string deleteId in model.IdsToDelete)
                } // endif (model.IdsToDelete != null)
            } // endif (ModelState.IsValid)

            return RedirectToPage("/RoleAdmin/ManageUsers", new { id = model.RoleId });
        } // end public async Task<IActionResult> Edit(RoleModificationViewModel model)
        } // end public async Task OnGetAsync(string returnUrl = null)

        public async Task <IActionResult> OnPostAsync(string returnUrl = null)
        {
            returnUrl      = returnUrl ?? Url.Content("~/");
            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
            if (ModelState.IsValid)
            {
                var user = new Core3IDUser {
                    UserName  = Input.Email, Email = Input.Email, LastName = Input.LastName,
                    FirstName = Input.FirstName, PhoneNumber = Input.PhoneNumber
                };
                var result = await _userManager.CreateAsync(user, Input.Password);

                if (result.Succeeded)
                {
                    _logger.LogInformation("User created a new account with password.");

                    var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);

                    code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
                    var callbackUrl = Url.Page(
                        "/Account/ConfirmEmail",
                        pageHandler: null,
                        values: new { area = "Identity", userId = user.Id, code = code },
                        protocol: Request.Scheme);

                    await _emailSender.SendEmailAsync(Input.Email, "Confirm your email",
                                                      $"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");

                    if (_userManager.Options.SignIn.RequireConfirmedAccount)
                    {
                        return(RedirectToPage("RegisterConfirmation", new { email = Input.Email }));
                    }
                    else
                    {
                        await _signInManager.SignInAsync(user, isPersistent : false);

                        return(LocalRedirect(returnUrl));
                    } // endif (_userManager.Options.SignIn.RequireConfirmedAccount)
                }     // endif (result.Succeeded)
                foreach (var error in result.Errors)
                {
                    ModelState.AddModelError(string.Empty, error.Description);
                } // end foreach (var error in result.Errors)
            }     // endif (ModelState.IsValid)

            // If we got this far, something failed, redisplay form
            return(Page());
        } // end public async Task<IActionResult> OnPostAsync(string returnUrl = null)