# Viewer Modes

There are three **FixedDocumentViewerModes** which specify the behavior of **RadPdfViewer** when you left-click in the document and move the mouse around (without releasing the left button of the mouse):

* *None*: The control does nothing;

* *Pan*: The document is scrolled in the respective direction;

> caption Figure 1: Pan

![WinForms RadPdfViewer Pan](https://www.telerik.com/products/winforms/documentation/assets/a1b0607dd4e41bf3af413723d8d84374/pdfviewer-ui-viewer-modes001.gif)

* *TextSelection* – selection is initiated, which stops when you release the button of the mouse;

> caption Figure 2: TextSelection

![WinForms RadPdfViewer TextSelection](https://www.telerik.com/products/winforms/documentation/assets/fc22bbe8385599ecbcdd89558c296dd1/pdfviewer-ui-viewer-modes002.gif)

## Specify the Viewer Mode Using UI

The viewer mode can be changed using the **RadPdfViewerNavigator** (as shown in the picture).

> caption Figure 3: Using the UI

![WinForms RadPdfViewer Using the UI](https://www.telerik.com/products/winforms/documentation/assets/7b2a9736059a75bacccea945f3cea90e/pdfviewer-ui-viewer-modes003.png)

## Specify the  Viewer Mode in Code

The mode of the viewer is set using the **ViewerMode** property:

#### With Code

```C#
this.radPdfViewer1.ViewerMode = FixedDocumentViewerMode.TextSelection;

```

```VB.NET
Me.RadPdfViewer1.ViewerMode = FixedDocumentViewerMode.TextSelection

```

## See Also

* [Getting Started](https://www.telerik.com/products/winforms/documentation/controls/pdfviewer/getting-started)
* [Document Modes](https://www.telerik.com/products/winforms/documentation/controls/pdfviewer/ui/document-modes)
* [View Modes](https://www.telerik.com/products/winforms/documentation/controls/pdfviewer/ui/viewer-modes)