Hi,
I set up TreeListBoxItemAdapter ChildrenQueryModeDefault = OnExpansion, then by rewriting CanHaveChildren can control node, when I have modified the data of the current node, I want to reset whether the node can be expanded or not, but canhavechildren will not be executed again.Is there a way to control whether the node can be expanded at any time.
Hello,
If you call the TreeListBox.InvalidateChildren(item) method and pass it your view model item, it should requery the CanHaveChildren state.
Is there any other solution? My current approach is not convenient to get treelistbox in the place of business logic. I have tried to bind isexpandable, but it will cause other problems.
If your view model raises an INotifyPropertyChanged.PropertyChanged event for the property name that is set via the item adapter's ChildrenPath, our logic that watches the view model will think the items changed and should requery the CanHaveChildren state.
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