WPF CollectionViewSource performance issues when changing flitering/grouping

Question

Hi I have a problem with the CollectionViewSource performance. I have a CollectionViewSource bound to a Datagrid. The underlying CollectionView object contains one group description. I also use a filter that I change quite often to filter the CollectionView. Each time I change the filter, GroupDescriptions get cleared automatically. If I try to add again my group description after I change the filter, the UI freezes for a few seconds which is quite annoying. Normally the CollectionView contains 200-1000 objects. What could I do to speed up performance?

is it wpf datagrid or some third party ? – Muds Feb 18 '15 at 16:22 — Muds, Feb 18 '15 at 16:22
it is a custom datagrid inheriting from WPF datagrid – muku Feb 19 '15 at 10:50 — muku, Feb 19 '15 at 10:50

score 0 · Answer 1 · edited May 06 '15 at 20:00

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If you're using .net 4.5, enable grouping virtualization on the DataGrid:

VirtualizingStackPanel.IsVirtualizingWhenGrouping="True"

edited May 06 '15 at 20:00

seaotternerd

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answered May 06 '15 at 19:54

josenyc

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Our PCs are all in .NET 4.0. So I cannot use this unfortunately. – muku May 13 '15 at 10:29
Have a look here: http://stackoverflow.com/questions/1477044/wpf-datagrid-virtualization-with-grouping – josenyc May 19 '15 at 21:42

WPF CollectionViewSource performance issues when changing flitering/grouping

1 Answers1