ASP .Net 4.0 Routing and Paging

Question

Hi I refer to the following article,

http://www.codeproject.com/KB/aspnet/paging%5Fwith%5Furl%5Frouting.aspx

1) Would like to know whether it avoids full fetch of data?

To gain the performance as it mentioned in the stackover flow question here?

http://stackoverflow.com/questions/1061574/custom-paging-or-standard-paging-in-asp-net-which-method-is-efficient

2) Does the new feature of .Net 4.0 Routing improved over previous version?