DataKey

            function getTableData(sender, args, key) { // Recebe sender e parametros do evento -> devolve valor da chave chamada
                var tableView = sender.get_masterTableView()
                try {
                    var itemIndex = args.get_commandArgument()
                }
                catch (error) {
                    var itemIndex = args.get_itemIndexHierarchical()
                }

                var KeyVal = tableView.get_dataItems()[itemIndex].getDataKeyValue(key)
                return KeyVal
            }
            function AbrirContrato(sender, args) {
                var IDContrato = getTableData(sender, args, "IDContrato")
                parent.document.body.style.overflow = "hidden";
                OpenRadWindow('RadWindow1', '../download_arp_mop.aspx', 'idcontrato', IDContrato, 'Visualizar Contrato', '98%', '98%', 'Close|Reload|Maximize');
            }