public async Task <IActionResult> ChangePassword(ChangePasswordModel model)
        {
            if (ModelState.IsValid)
            {
                // summary message to be send to the summary view
                string accountOperationSummaryMessage = string.Empty;

                OperationResultStatus changePassword = await _userManager.ChangePassword(model, HttpContext);

                if (changePassword.Result != OperationResult.Success)
                {
                    ModelState.AddModelError(string.Empty, changePassword.Message);

                    return(View());
                }
                else
                {
                    accountOperationSummaryMessage = changePassword.Message;
                }

                return(View("AccountOperationSummary", (object)accountOperationSummaryMessage));
            }
            else
            {
                return(View());
            }
        }