Hi pelayito,

In order to access child rows in the WHDG client-side, you could use something like:

$find('WebHierarchicalDataGrid1').get_gridView().get_rows().get_row(0).get_rowIslands()[0].get_rows().get_row(0)

You can find detailed instructions on how to access rows in the hierarchical grid both client and server side in our documentation at:

http://help.infragistics.com/NetAdvantage/ASPNET/2011.1/CLR4.0/?page=WebHierarchicalDataGrid_About_WebHierarchicalDataGrid.html

Please contact me if you have any questions.

Best Regards,

Petar Ivanov
Developer Support Engineer
Infragistics, Inc.
http://es.infragistics.com/support