Hello Florian,
This appears to be a bug in the
RadTreeView caused by the
HIerarchical virtualization mode
. I logged it in our
PITS system where you will soon be able to view its status (
TreeView: HIerarchical Virtualization crashes the application when a TreeViewItem is collapsed). I updated your Telerik points accordingly.
However, you can use the other two virtualization modes: "
Standard" and "
Recycling".
Thank you for your cooperation.
All the best,
Petar Mladenov
the Telerik team
Browse the
videos here>> to help you get started with RadControls for WPF