> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/uwp/ui-customization/toolbar.md).

# APIs to customize the toolbar in UWP viewer

Learn how to customize the toolbar in the PDF Viewer with the UWP Tools SDK. Follow this guide to reorder buttons and enhance your user experience. The Apryse uwp SDK streamlines secure document proce

This is a quick guide on re-ordering and customizing the toolbar when using the PDF Viewer in the UWP Tools SDK.

The code snippet below will setup the AnnotationToolbarOptions class, which stores a list of buttons to add to the toolbar. Adding buttons to the list during initialization will adjust what is available on the toolbar.

{% tabs %}
{% tab title="C#" %}
{% code lineNumbers="true" %}

```csharp
pdftron.PDF.Tools.Controls.AnnotationToolbarOptions annotationToolbarOptions = new pdftron.PDF.Tools.Controls.AnnotationToolbarOptions();
            List<ToolbarButtonType> mainToolBarItems = new List<ToolbarButtonType>();
            mainToolBarItems.Add(ToolbarButtonType.Pan);
            // Add buttons to toolbar....

            annotationToolbarOptions.MainToolbarItems = mainToolBarItems;
            mAnnotationToolbar = new pdftron.PDF.Tools.Controls.AnnotationCommandBar(mToolManager, annotationToolbarOptions);
            //mAnnotationToolbar.IsInkToolButtonVisible = false;
            //mAnnotationToolbar.IsSignatureToolButtonVisible = false;
```

{% endcode %}
{% endtab %}
{% endtabs %}


---

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