I am using Telerik Silverlight version 2013.1.422.

I have RadGridView bound to a hierarchical dataset. I have inherited some legacy code in my solution (written a couple years ago by someone no longer with my company) that handles the ElementExported event to handle exporting child tables.

Is there an out-of-the-box solution for this problem?

I see that Winforms GridView has a special property that can be set for this (excelExporter.ExportHierarchy = true;)
http://www.telerik.com/forums/excel-export-for-hierarchial-data-in-the-radgridview#1611645 

Does the Silverlight RadGridView have a setting like that?

Kind Regards,
Albert

I forgot to mention that the legacy custom code to handle ElementExported is incomplete and buggy... An out-of-the-box solution from Telerik would be much preferred...

Hello Albert,

The Export functionality of RadGridView has not changed significantly. You can check our online demos on Exporting RowDetails and SpreadProcessing Integration.

Regards,
Dimitrina
Telerik