# Notes

## Content



You can add notes for yourself to record feedback, make comments or flag any edits in a Pdf document. PDF for .NET allows you to add a note and display a small note icon wherever a note is added in the document using the **AddNote** method.

The following image showcases a line note added to a PDF document.

![](https://cdn.mescius.io/document-site-files/images/b68b81df-4fcb-4b28-8415-e020038b533a/images/notes.png)

Using PDF for .NET, you can add the following types of notes in a Pdf document. The following table also lists the respective classes that can be used for adding different types of notes in a Pdf document.

| **Note Type** | **Class** | **Description** |
| --- | --- | --- |
| Line Note | PdfLineNote | Represents a note in a single straight line. |
| Circle Note | PdfCircleNote | Represents an elliptical note. |
| Square Note | PdfSquareNote | Represents a rectangular note. |
| Text Note | PdfTextNote | Represents a text note. |

Additionally, each class mentioned in the above table has its own unique properties which can be used based on your requirements.

To add a line note in a Pdf document, use the following code. This example uses the sample created in [Quick Start](/componentone/docs/win/online-pdf/quickstart).

```csharp
RectangleF rect2 = new RectangleF(180, 90, 60, 10);
Point p1 = new Point();
p1.X = 5;
Point p2 = new Point();
p2.X = 10;
//Create a line note
PdfLineNote note = new PdfLineNote(p1,p2);
note.Contents = "This is a note";
//Add a line note to the Text
pdf.AddNote(note, rect2);
```