<td style="width: 223px">
                    &nbsp;<asp:ListBox ID="ListBox1" runat="server" DataSourceID="SqlDataSource2" DataTextField="Filiale"
                        DataValueField="NomeFile" Height="115px" OnSelectedIndexChanged="ListBox1_SelectedIndexChanged"
                        Rows="5" ValidationGroup="ObjectDataSource1" Visible="False" Width="207px" SelectionMode="Multiple"></asp:ListBox><asp:SqlDataSource
                            ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:StatsConnectionString %>"
                            SelectCommand="SELECT DISTINCT  [Filiale], [NomeFile] FROM [TabellaFiliali] ORDER BY [Filiale]">
                        </asp:SqlDataSource>
 </td>