I understood the thing.What I did.I placed a wingrid,ultradatasource in the form.In ultradatasource CellDataRequested event I am assigning e.data , values from datatable. It is ok .It is giving improvement. I also wrote in wingrid '  InitializeRow event ,in that I am assigining values to grid cells by calculating.That time CellDataUpdating event is fired for ultradatasource.I donot want to fire this event at this time.Please suggest me what to do?Also if i use this paging functionality is included in my full fleedeged wingrid application ,where we have used sorting,group by,will it give imact or i can use paging freely. Will CellDataUpdating event will slow down the performance given by paging

Please let me know

I have one dataset which contains 10,000 recorsd.I have one ultradatasource and one wingrid.I set wingrid's datasource to ultradatasource .

Now our ultradatasource  contains 0 records.Now in ultradatasource  's CellDataRequested event i have to assign e.row values.

How i can know which record is to select from dataset.it is only on basis of index like 1,2.

But in dataset there are unique identifier for each record.

Please let me know.