The new ListView control
A few days ago I've said I was starting to play with the new controls introduced by .NET 3.5. One of those controls is the new ListView control. There already several good articles on this control. For instance, both Scott Guthrie and Rick Strahl have written about it (Rick also describes how to use the grouping functionality). One of the things that got me lost was the grouping functionality. Like Rick, I've tried several things to make it work with data grouping without any success. So I've asked those "that know" (thanks guys) and it seems like the purpose of the grouping feature is to let you easilly build groups:
A | B | C
D | E | F
...
When you think about it, there really wasn't an easy way to achieve something like this in the past...If you're looking to get grouping based on data, then you'll have to use the old tricks based on nesting a data bound control inside another bound control.