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UI Virtualization causes expanded items to collapse automatically

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TreeListView
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Markus
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Markus asked on 30 May 2014, 02:37 PM
I have a TreeListView with a IsExpandedBinding to my view model (TwoWay).
Before I show the tree the first time, I expand a couple of nodes programmatically to show the tree initially in a state which is most useful for the customer. Due to UI virtualization I noticed that some of the nodes which I expanded programmatically get collapsed again which causes a not desired initial view of my tree. If I switch off UI virtualization, everything works as expected, BUT this is not acceptable since I will have up to 100.000 rows in my tree.
Any thoughts on how to solve this problem?

Thanks,
Markus

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Yoan
Telerik team
answered on 04 Jun 2014, 08:22 AM
Hello Markus,

I've tried to reproduce your problem, but to no avail. I have attached my test project for a reference. Could you check it and modify it in order to demonstrate the issue? 

Regards,
Yoan
Telerik
 
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