or
protected void gridRatings_ItemCommand(object sender, Telerik.Web.UI.GridCommandEventArgs e){ if (e.CommandName == "AddNewChildRating") { GridDataItem parentRow = e.Item as GridDataItem; GridTableView parentGridView = parentRow.GetClosestParentControlByType<GridTableView>(); RadGrid parentGrid = parentGridView.GetClosestParentControlByType<RadGrid>(); parentRow.Expanded = true; //parentGridView.HierarchyDefaultExpanded = true; //parentGridView.DetailTables[0].InsertItem(); parentGridView.DetailTables[0].IsItemInserted = true; parentGridView.DetailTables[0].Rebind(); }}