Pause summary calculation while updating group of cells

Hi,

I want to stop the summary calculation .i.e calculating the summary row for each grouplevel when i am updating group of rows.
Once i complete the task of updating group of rows then i want to calculate summary once. so calculation is not for each row value update.
How to achieve this??
This is very urgent for me. please tell

Thanks
Harshad

Before starting your updates, try setting grid.Table.TableDirty = true and grid.Table.SummariesDirty = true to see if this will do what you need.

Actually i am updating multiple records in the grid by some calculation which get updated in the datasource binded. records are aggregated upto 5 groups.
"Rec.Setvalue" is taking lots of time to update multiple records. For 200 records it is taking around 1min.
I want this should happen in quick time...
Please tell me how to make it faster...
I used beginedit & endedit but not getting much difference....also tried some optimisation tech in the sample but not helping much
Please give me some pointer to achieve this

Please help me in this...
I need to stop the summary calculations for the groups while all my details records updation happnes..I want to generate the summaries only once not for each row value changed ..

Can we do this..please let me know the way to do this

Thanks