How To Find Top 10 Record in ListView in XAF

if (View is ListView && View.ObjectTypeInfo.Type == typeof(GroupWiseMasterDailyLedger))
{
ListView lv = (ListView)View;
XPCollection XPC =(XPCollection) lv.CollectionSource.Collection;
SortingCollection sc = new SortingCollection(); sc.Add(new SortProperty("Debit", DevExpress.Xpo.DB.SortingDirection.Descending));
XPC.Sorting = sc;
XPC.TopReturnedObjects = 5;
}