---
title: "BaseViewer..::.ZoomMode Property "
canonical: https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_BaseViewer_ZoomMode.htm
product: "Graphics Mill 5.5 for .NET"
---

This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)

# BaseViewer.ZoomMode Property 
 
Gets/sets a value that specifies content zoom mode of the control (automatic or manual).
 
**Namespace:** [Aurigma.GraphicsMill.AjaxControls](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_AjaxControls.htm.md)
 **Assembly:** Aurigma.GraphicsMill.AjaxControls (in Aurigma.GraphicsMill.AjaxControls.dll)
 
## Syntax
  
```
<BrowsableAttribute(True)> _
Public Property ZoomMode As ZoomMode
```
 
```csharp
[BrowsableAttribute(true)]
public ZoomMode ZoomMode { get; set; }
```
 
### Property Value
 [ZoomMode](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_ZoomMode.htm.md) enumeration member that specifies the zooming behavior.
 
## Remarks
  
In manual zoom mode (i.e. if the value of this property is [None](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_ZoomMode.htm.md)) user can change the content zoom either by [Zoom](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_BaseViewer_Zoom.htm.md) property or using some zooming [navigator](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_BaseViewer_Navigator.htm.md).
 
If automatic zoom (except [ZoomControl](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_ZoomMode.htm.md)) mode is used and you attempt to change [Zoom](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_BaseViewer_Zoom.htm.md) value manually, ZoomMode property will be set to [None](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_ZoomMode.htm.md).
 
**Note** 
When you set some zooming navigator into the [Navigator](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_BaseViewer_Navigator.htm.md) property, this property is reset to [None](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_ZoomMode.htm.md).
   
## See Also

### Reference

- [BaseViewer Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_BaseViewer.htm.md)
- [Aurigma.GraphicsMill.AjaxControls Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_AjaxControls.htm.md)
- [BaseViewer.Zoom](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_BaseViewer_Zoom.htm.md)

### Manual

- [Displaying Image in BitmapViewer (AJAX Controls)](https://www.graphicsmill.com/docs/gm5/AjaxControlsDisplayingImageinBitmapViewer.htm.md)