You could try by using the FireCommand(commandName, commandArgument) method of the RadDataPager, where commandName should be "Page" and commandArgument the page index. Note that the control that you are paging needs to be already bound and having the 11th item, so its PreRender event would be a good place to try.
the Telerik team
Registration for Q1 2011 What’s New Webinar Week is now open. Mark your calendar for the week starting March 21st and book your seat
for a walk through all the exciting stuff we ship with the new release!