I'm sorry, but I can't find this property even in the api-doc: http://help.infragistics.com/Help/NetAdvantage/NET/2008.2/CLR2.0/html/Infragistics2.WebUI.UltraWebGrid.v8.2~Infragistics.WebUI.UltraWebGrid.UltraGridRow_members.html

Can you give me further assistance. Thanks

The ListObject property on the row has always been there. Or at least, it's been there for a very long time. It certainly exists in v8.2. If you are unable to find it, then you must be looking at the wrong object. Are you sure you are looking at an UltraGridRow? 

If your grid is bound to a datatable/dataset then the ListObject property of the UltraGridRow will be a DataRowView object.