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1075
Performance problem enumerating rows when using grouped columns
posted

Hi,

I'm having some issues with the performance of the ultrawingrid. In my situation, I have a grid with a group by column and about 8000 rows. I need to loop through the individual rows to set values to some unbound columns. However, rather than the assigning of those values, just the looping through the rows (actually: getting the enumerator) causes a delay of a few seconds.

I created a small sample project demonstrating the problem. The project groups a column in the grid and fills it's datasource with 10000 rows. When clicking the test button, it refills the datasource, and loops through the rows. This takes a few seconds, and is too long for a smooth user experience.

My question is, how can I speed up the enumeration of the rows?

I already tried the SuspendUpdate and SuspendRowSynchronization as mentioned in the performance guide, but that didn't help. I also tried the GetRowEnumerator method, but that didn't help either. I hope you can. Thanks in advance.

I'm using version 10.3.20103.1000

GridGroupBySlowExample.zip
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