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Howard
1467
Outlook Style Grid with Group-By Rows Gloes Into Infinite Loop
posted
I put together a grid using Outlook style grouping, with about 30 choosable
columns. About a third of the columns have custom summaries, and about half
of these use custom Formulas in conjunction with an UltraCalcManager. It
works OK except for one problem.

When I change the grouping, or the sort order of a group, the change may
take a second or so (there are 6,000 rows in the underlying table) before
the grid appears to have updated. That is OK. But then the CPU keeps
chugging away for another 5 to 15 seconds. Worse, with certain groupings,
the CPU keeps going apparently indefinitely, as if it is in a loop. The UI
continues to be responsive, so something is going on in a background thread.

Does anyone recognize this issue or have advice on how to fix it?.
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  • 1467
    posted
    I see this effect even with just 1,000 rows in the underlying table.
     
    Without any custopm formulas in the summary columns, the time spend calculating is fast (< 1 second). With one, it is up to 10 seconds. With four, it seems to be infinite (> 4 minutes) in some cases.
     
    Does anyone recognize this issue or have advice on how to fix it?
    <howardw39> wrote in message news:13664@forums.infragistics.com...
    I put together a grid using Outlook style grouping, with about 30 choosable
    columns. About a third of the columns have custom summaries, and about half
    of these use custom Formulas in conjunction with an UltraCalcManager. It
    works OK except for one problem.

    When I change the grouping, or the sort order of a group, the change may
    take a second or so (there are 6,000 rows in the underlying table) before
    the grid appears to have updated. That is OK. But then the CPU keeps
    chugging away for another 5 to 15 seconds. Worse, with certain groupings,
    the CPU keeps going apparently indefinitely, as if it is in a loop. The UI
    continues to be responsive, so something is going on in a background thread.

    Does anyone recognize this issue or have advice on how to fix it?.
    http://forums.infragistics.com/forums/p/1887/13664.aspx#13664

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