Hi Jasper,
Page sub-totals are currently not supported since the data processing and the paging are two separate processes. Furthermore, each rendering extension has a different paging mechanism which complicates the task even more. In this line of thoughts, until we implement page aggregates there is no possible workaround. However this is in our TODO list but at this point we cannot make estimates as to when we would start working on it, due to other currently pending issues. However once we do, it would be included in
our RoadMap.
Sorry for the temporary inconvenience.
Regards,
Steve
the Telerik team
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