Unfortunately currently it is not possible to localize the WPF report viewer. We will do our best to implement the missing functionality for a subsequent release.
Please excuse us for the temporary inconvenience.
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