The DisplayGroup event can be used to further customize whatever has to be shown: And a DisplayGroup event which is fired whenever one of the grouping rows is being painted. The component exposes a GroupingChanged event to catch when the grouping was changed or removed. default sort order for the groups is ascending, // you can change that in the options as well (ascending, descending or none) if you don't want the grouped column name to be repeated in the headers: if you don't want the (rowcount) to be shown in the headers: to collapse all loaded rows: (the difference with setting the option above, // is that after choosing a new grouping (or on a reload), the new groups would expand. to start with all rows collapsed on a (re)load or // when the group is changed you can set the option startcollapsed:
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