Hello, Dilyan. We want to add a little more. You create and populate your data source colection in you ViewModel class cunstructor.
publicMyViewModel(){ this.groups = newObservableCollection<Group>(); var group = newGroup() { Name = "Parent Group"}; var childGroup = newGroup() { Name = "Child Group"}; childGroup.ChildProfileElenents.Add(newRegister() { Name = "Some Name", CurrentValue = "5" }); group.ChildProfileElenents.Add(childGroup); this.groups.Add(group);}But we are doing this in IConfirmNavigationRequest.INavigationAware.OnNavigatedTo event handler (we use Prism). Could this last (that we create and populate our data source colection in this event handler) be the reason of that RadTreeListView does not allow to edit itself normally? Please reply.