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choosing a hi-perf tree

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34288 Sep 7,2005 10:56 AM Sep 12,2005 12:17 PM General Discussion 3
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hemant
Asked On September 7, 2005 10:56 AM

hi, i have the following requirements: - to display a hierachical data structure (4 levels deep) with upto 25000 records. - the data will be recalculated (or repainted) every 1 second. - new records may be added every 30 seconds. given these requirements, which control should i use? grouping, hierchical, virt tree (a lot of work), or tree adv data bound? regards

Administrator [Syncfusion]
Replied On September 7, 2005 01:41 PM

I think your reasonable choices are between a GridDataBoundGrid and a GridGroupingControl. The GridDataBoundGrid is lighter weight and for this reason would perform a little better than a GridGroupingCOntrol, but the mention of the requirement of adding rows is a plus for using the GridGroupingControl. The GridGroupingControl will automatically reflect the new rows. This is not the case with the GridDataBoundGrid. There you will have expand/collapse (can be done ''silently'') to display the new data, and this is extra work. I would set up a test program that has a dataset with the datacase that you want to measure performance. Then you can easily swap in/out either grid to see what basic performance you get out of the box before you start trying to optimize things for a particular grid.

Administrator [Syncfusion]
Replied On September 12, 2005 12:07 PM

hi, i''m finding that the performance in grouping control is poor. i haven''t tried the grid control yet. i may have to reducethe paints, as the updates are too many right now. 1) is there any way to prevent to grid from painting? 2) is there a virtual hierachical control ? regards

Administrator [Syncfusion]
Replied On September 12, 2005 12:17 PM

does suspendlayout work if you wish to selectively block painting on data changes?

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