Hi Omar,
Thanks for your interest in Syncfusion Products.
Currently, there is no direct support for zooming in grid but, you could do this by following the approach followed in the below sample. By implementing this, you can get the rows and columns in the grid to be fit in more pages.
Here is a sample
http://www.syncfusion.com/Support/user/uploads/Zoom_cb1cfe3b.zipLet me know if this helps.
Regards,
Rajagopal