I have my grid's GroupsChanging event handler set up so when the use right-clicks and selects "group by" on a DateTime column, the grid groups instead on a hidden column which contains only the date. This works great.
But when I right-click on select "ungroup" on the same column, the GroupsChanging event never fires! I assume that is because that column is not actually grouped by, but it's problematic. How do I ungroup on this custom, hidden column? Perhaps there is a way I can intercept the ungroup some other way (maybe even client-side)?
FYI: If I display the date-only column, and ungroup on that, it works!
But when I right-click on select "ungroup" on the same column, the GroupsChanging event never fires! I assume that is because that column is not actually grouped by, but it's problematic. How do I ungroup on this custom, hidden column? Perhaps there is a way I can intercept the ungroup some other way (maybe even client-side)?
FYI: If I display the date-only column, and ungroup on that, it works!
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Jeanne
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answered on 21 Mar 2013, 12:01 AM
I sorted this one out on my own. I'm not thrilled with the way I had to do it, but it works.
I catch the OnCommand event for the table client-side. If the command name is "UnGroupByColumn" and the command argument is the name of my custom-grouped datetime column, I cancel the event and then call the mastertableview ungroupColumn method with the name of the date-only column. The grid posts back, the GroupsChanging event is triggered, and I don't even have to handle it! The altered column name I specified is automatically removed from grouping!
I catch the OnCommand event for the table client-side. If the command name is "UnGroupByColumn" and the command argument is the name of my custom-grouped datetime column, I cancel the event and then call the mastertableview ungroupColumn method with the name of the date-only column. The grid posts back, the GroupsChanging event is triggered, and I don't even have to handle it! The altered column name I specified is automatically removed from grouping!