<asp:Panel ID="pnHeader" runat="server" OnDataBinding="pnHeader_DataBinding">
                <table width="100%">
                    <tr>
                        <td><asp:TextBox ID="flightno" runat="server" /></td>
                        <td><asp:TextBox ID="ac" runat="server" /></td>
                        <td><asp:TextBox ID="date" runat="server" /></td>
                        <td><asp:TextBox ID="afml" runat="server" /></td>

                    </tr>
                </table>
            </asp:Panel>