>Let me clarify...
>
>Allow the user to sort (ascending/descending) by clicking on the column header. Provide a visual clue as to how the sorting is done in the column header. Do this without round tripping to the server.
>
>Now do the same thing, but with grouping and provide an indicator in the grid where one group ends and another begins.

Select the behaviours you want using Infragistics grids. Less than a minute.

3rd party, but you used 3rd party as an example too.

>
>
>>SELECT * FROM MyTable ORDER BY... GROUP BY
>>
>>How did you do this without WPF? I've done it a few different ways. Surely you're not advocating that there was no way to do this before WPF?