Update Toolbars.md

docs/en/UI/AspNetCore/Toolbars.md

@@ -54,16 +54,17 @@ public class MyToolbarContributor : IToolbarContributor
 
 You can use the [authorization](../../Authorization.md) to decide whether to add a `ToolbarItem`.
 
-Use the `RequiredPermissionName` property of `ToolbarItem` or manually checking the permissions.
-
 ````csharp
-context.Toolbar.Items.Insert(0, new ToolbarItem(typeof(NotificationViewComponent), requiredPermissionName: "MyPermissionName"));
-
 if (await context.IsGrantedAsync("MyPermissionName"))
 {
     //...add Toolbar items
 }
 ````
+You can use `RequiredPermissionName` as a shortcut. It is also more performant, ABP optimizes the permission check for all the items.
+
+````csharp
+context.Toolbar.Items.Insert(0, new ToolbarItem(typeof(NotificationViewComponent), requiredPermissionName: "MyPermissionName"));
+````
 
 This class adds the `NotificationViewComponent` as the first item in the `Main` toolbar.
 
@@ -84,4 +85,4 @@ That's all, you will see the notification icon on the toolbar when you run the a
 
 ## IToolbarManager
 
-`IToolbarManager` is used to render the toolbar. It returns the toolbar items by a toolbar name. This is generally used by the [themes](Theming.md) to render the toolbar on the layout.
+`IToolbarManager` is used to render the toolbar. It returns the toolbar items by a toolbar name. This is generally used by the [themes](Theming.md) to render the toolbar on the layout.