> 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/annotation/rectangle-annotation.md).

# Add a rectangle annotation to a PDF in UWP

Learn how to add a rectangle annotation to a PDF Document page with this full code sample. Add or edit various PDF annotations like hyperlink, stamp, text, and more. The Apryse uwp SDK streamlines sec

To add a rectangle annotation to a PDF Document page.

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

```csharp
PDFDoc doc = new PDFDoc(filename);
Page page = doc.GetPage(1);

// Create a rectangle
Square sq = Square.Create( doc, new Rect(500,200, 580, 300 ) );
sq.SetColor(new ColorPt(1, 0, 0), 3);
sq.SetInteriorColor(new ColorPt(0, 1, 1), 3);
double[] dash = new double[2];
dash[0]=4;dash[1]=2;
sq.SetBorderStyle(new Annot.BorderStyle( Annot.BorderStyle.Style.e_dashed, 6, 0, 0, dash ) );
sq.SetPadding( new Rect(4,4,4,4) );
sq.RefreshAppearance();
page.AnnotPushBack( sq );
```

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

[Add or edit PDF annotations sample](/uwp/get-started/samples.md#annotation) Full code sample which shows how to add or edit PDF annotations (e.g. hyperlink, intra-document link, stamp, rubber stamp, file attachment, sound, text, free-text, line, circle, square, polygon, polyline, rectangle, squiggly, caret, and ink).


---

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Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
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