private void DeleteItem() { OperationResult objOperationResult = new OperationResult(); // Obtener los IDs de la fila seleccionada string pstrAttentionInAreaId = Convert.ToString(grd.DataKeys[grd.SelectedRowIndex][0]); // Delete the item _objNodeBL.DeleteAttentionInAreaByNode(ref objOperationResult, pstrAttentionInAreaId, ((ClientSession)Session["objClientSession"]).GetAsList()); Session["strFilterExpression"] = ""; }