I have a RadGridView, and have added a ColumnGroupDescriptor to `RadGridView.GroupDescriptors`. I have also added an AggregateFunction to `GridViewColumn.AggregateFunctions` for several columns.
The aggregateFunction results are displayed in the grid's footer, each group's footer, and each group's header.
I now want to add an aggregateFunction that, only in the group's header, shows how many rows are in the group. I do not want this result to be shown in any footers.
I understand that this second point could be achieved if I had used GroupDescriptor instead of ColumnGroupDescriptor, however I do still want to be able to add other aggregateFunctions to columns and have these results show in both headers and footers.
I have currently attempted this by adding a small prefix to the AggregateFunction's "FunctionName", indicating it should only be shown in group headers; and then modified the GridView template to filter AggregateFunctions by this prefix as needed for headers and footers. However, this is not an elegant solution, so I was wondering what you would recommend.