Hi Lucia,
Below is a forum thread that shows you "How to acheive the paging in a virtual grid?"
http://www.syncfusion.com/support/Forums/message.aspx?&MessageID=18735If you want to scroll the grid programmatically than set TopRowIndex property to new rowIndex. Below is a code snippet
this.grid.TopRowIndex = 400;
Best regards,
Haneef