The built-in localization mechanism in Silverlight allows you to localize RadTreeListView control.
Here is a list of the supported languages:
To learn more about the ways in which to localize the RadControls, please read the common topic about Localization.
RadTreeListView inherits the RadGridViewDataControl so it shares its resource keys and does not expose any specific ones. To see a list of all resource keys and their default values read the Localization topic for __RadGridView_.