public async Task <IActionResult> ChangePassword2(ChangePasswordViewModel2 model)
        {
            if (ModelState.IsValid)
            {
                User user = await _userManager.FindByIdAsync(model.Id);

                if (user != null)
                {
                    IdentityResult result =
                        await _userManager.ChangePasswordAsync(user, model.OldPassword, model.NewPassword);

                    if (result.Succeeded)
                    {
                        return(RedirectToAction("Index"));
                    }
                    else
                    {
                        foreach (var error in result.Errors)
                        {
                            ModelState.AddModelError(string.Empty, error.Description);
                        }
                    }
                }
                else
                {
                    ModelState.AddModelError(string.Empty, "Пользователь не найден");
                }
            }
            return(View(model));
        }
        public async Task <IActionResult> ChangePassword2(string id)
        {
            User user = await _userManager.FindByIdAsync(id);

            if (user == null)
            {
                return(NotFound());
            }
            ChangePasswordViewModel2 model = new ChangePasswordViewModel2 {
                Id = user.Id, Email = user.Email
            };

            return(View(model));
        }