In order to disable a specific RadPane you could set the 'IsEnabled' property to false. Please see the provided code snippet:
However, if that is not what you're looking for could you please provide us more information about your scenario and the functionality you're trying to achieve.
I'm looking forward to hearing from you.
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.