# DocumentViewer.ZoomFactor Property

> Gets or sets the zoom factor in percent.

- **Product:** TX Text Control .NET Server
- **Section:** Reference
- **Kind:** Property
- **Introduced:** 15.0
- **Namespace:** `TXTextControl.DocumentServer.Web`
- **Package:** `TXTextControl.TextControl.ASP.SDK` (assembly `TXDocumentServer.Web.DocumentViewer.dll`, from the private NuGet feed or Text Control Offline Packages)
- **.NET Framework:** reference `TXDocumentServer.Web.DocumentViewer.dll` from the setup
- **Path:** TX Text Control .NET Server > Reference > TXTextControl.DocumentServer.Web > DocumentViewer.ZoomFactor Property
- **519 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-web/documentviewer/zoomfactor-property/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-web/documentviewer/zoomfactor-property/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-web/documentviewer/zoomfactor-property/llms-full.txt

---

### Description

Gets or sets the zoom factor in percent.

### Syntax

```csharp
public int ZoomFactor { get; set; }
```

```vbnet
Public Property ZoomFactor As Integer
```

### Examples

`DocumentServer.Web.DocumentViewer.ZoomFactor` belongs to the legacy Web Forms viewer. In the current ASP.NET Core viewer, configure the server-rendered component through `DocumentViewerSettings.View`; interactive page state and styling are handled by the viewer client.

```csharp
documentViewerSettings.View = TXTextControl.Web.MVC.DocumentViewer.DocumentViewerSettings.ViewMode.Mobile;
if (documentViewerSettings.View != null)
{
    Console.WriteLine("View is available for Document Viewer Settings.");
}
```

```vbnet
documentViewerSettings.View = TXTextControl.Web.MVC.DocumentViewer.DocumentViewerSettings.ViewMode.Mobile
If documentViewerSettings.View IsNot Nothing Then
    Console.WriteLine("View is available for Document Viewer Settings.")
End If
```

### Limitations

The zoom factor must be between 10 and 400 percent. Also, setting the zoom factor only has an effect, if the [DocumentServer.Web.DocumentViewer.ZoomTo](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-web/documentviewer/zoomto-property/llms-full.txt) property is set to ZoomLevel.FixedSize.

---

## Nearby

- **Previous:** [DocumentViewer.TotalPages Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-web/documentviewer/totalpages-property/llms-full.txt)
- **Next:** [DocumentViewer.ZoomTo Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-web/documentviewer/zoomto-property/llms-full.txt)