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Expand all records excessively slow?
posted

I have a grid with some 800 records, and each record having a "sub-record" containing 1- ~30 items.

Now if I create a button handler doing nothing else but looping through xamDataGrid1.Records and setting IsExpanded=true for each record I wait for nearly a minute with one processor core maxed out.

This is not really usable performance, am I doing something wrong?

Using version 9.1.20091.2023

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