Hi,
You can use Zoom property to set the zoom factor of a worksheet. Please refer the following code snippet which illustrates the above:
[C#]
//Setting the zoom factor
sheet.Zoom = 50;
[VB.NET]
'Setting the zoom factor
sheet.Zoom = 50
Here is the sample for your reference:
Zoom.zipPlease take a look and let me know if you have any other questions.
Best Regards,
Melba