You can subscribe for the TreeListViewRow.IsExpandedChangedEvent
event with AddHandler(...)
extension method in Telerik.Windows namespace. Here is a sample code snippet that does this:
sender, RoutedEventArgs e)
// Do logic on expand/collapse here.
We are thinking of exposing an event on the control itself that can be used as well.
All the best,
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items