actually it worked but ot for a listbox
i actually have a listbox and the non postback is preventing me from adding to that list box. this is my code:
<td class="style1">
<asp:ListBox ID="ListBox_jud" runat="server" Height="224px" Width="293px"></asp:ListBox>
</td>
<td >
<asp:CheckBox ID="check_chief" runat="server" Text="????" />
<asp:Button ID="btn_jud1" runat="server" Text=">>"
OnClick="btn_jud1_Click" Height="27px" Width="62px" />
</td>
<td>
<asp:Button ID="btn_jud2" runat="server" Text="<<" OnClick="btn_jud2_Click"
Height="25px" Width="65px" /> Go to the complete details ...