public async Task<ActionResult> Create(Create roleViewModel)
        {
            if (ModelState.IsValid)
            {
                var role = new IdentityRole(roleViewModel.RoleName);
                var roleresult = await RoleManager.CreateAsync(role);
                if (!roleresult.Succeeded)
                {
                    ModelState.AddModelError("", roleresult.Errors.First());
                    return View(roleViewModel);
                }
                roleViewModel.RoleId = role.Id;

                ResourceOperationPermission rop = new ResourceOperationPermission();

                rop.SaveCurrentRolePermission(roleViewModel);
                return RedirectToAction("Index").WithSuccess("新增群組成功");
            }

            return View(roleViewModel);
        }
        /// <summary>
        /// 儲存設定的權限
        /// </summary>
        /// <param name="viewModel">新增的ViewModel</param>
        public void SaveCurrentRolePermission(Create viewModel)
        {
            // 因為是新增,因此不會有任何目前已有的權限

            SaveRolePermissionToTable(viewModel.RoleId, viewModel.ResourceOperation,
                new List<RolesOperationPermission>());
        }
        //
        // GET: /Roles/Create
        public ActionResult Create()
        {
            var resourceOperation = ResourceCollection.ResourceOperation.DistinctBy(x => x.ResourceName)
                                    .ToList();

            resourceOperation.ForEach(x => x.Operation = ResourceOperationEnum.None);

            var viewModel = new Create()
            {
                ResourceOperation = resourceOperation
            };

            return View(viewModel);
        }