GridView - custom paging large amount of data

[Mrozik]

Hi!
I'm looking for a solution to show data in a table.
I think about DataView control - but I see one problem.
My data source is a WebService returning paged pieces
of data (I can't change behavior of this data source).

I found in documentation the only way to implement custom
paging is to use ObjectDataSource - but there is different
model of arguments (page size, page number, sort expression ,
order expression) of WS methods - there is no method counting rows
exposed in WebService (row count is returned with data -
by the way calling second method
to only count rows can cause efficiency problems).

Is there another way to implement custom paging in DataView
or this control is useless in more complicated solutions?

regards

mrozik