linkbutton doesn't work for updatepanel

Question

i have set of link buttons outside update panel

but when click any one of them they donot work at all , when i set the postbackUrl they make

full postback

my source code :

<asp:Panel ID="pnl_viewImages" runat="server">

                        <asp:Label ID="lbl_viewImages" runat="server" style="texalign: left" 
                            Text="view images :"></asp:Label>
                        <br />
                        <br />
                        <br />

                        <table cellpadding="0" cellspacing="0" style="width: 100%" class ="Alternating">
                            <tr>
                                <td colspan="5">

                                    <asp:UpdatePanel ID="updatePnl_image" runat="server">
                                        <ContentTemplate>
                                            <asp:ListView ID="lv_showImages" runat="server">
                                                <ItemTemplate>
                                                    <asp:Image ID="img_showNewsImage0" runat="server" Height="300px" 
                                                        ImageUrl='<%# "RetreiveImage.ashx" %>' Width="413px" />
                                                </ItemTemplate>
                                            </asp:ListView>
                                        </ContentTemplate>
                                        <Triggers>
                                            <asp:AsyncPostBackTrigger ControlID="lbtn_first" EventName="Click" />
                                            <asp:AsyncPostBackTrigger ControlID="lbtn_last" EventName="Click" />
                                            <asp:AsyncPostBackTrigger ControlID="lbtn_next" EventName="Click" />
                                            <asp:AsyncPostBackTrigger ControlID="lbtn_previous" EventName="Click" />
                                            <asp:AsyncPostBackTrigger ControlID="lbtn_delete" EventName="Click" />
                                        </Triggers>
                                    </asp:UpdatePanel>

                                </td>
                            </tr>
                            <tr>
                                <td>
                                    <asp:LinkButton ID="lbtn_first" runat="server" onclick="lbtn_first_Click">first</asp:LinkButton>
                                </td>
                                <td>
                                    <asp:LinkButton ID="lbtn_previous" runat="server" onclick="lbtn_first_Click">&lt;&lt;</asp:LinkButton>
                                </td>
                                <td>
                                    <asp:LinkButton ID="lbtn_next" runat="server" onclick="lbtn_first_Click" 
                                        >&gt;&gt;</asp:LinkButton>
                                </td>
                                <td>
                                    <asp:LinkButton ID="lbtn_last" runat="server" onclick="lbtn_first_Click">last</asp:LinkButton>
                                </td>
                                <td>
                                    <asp:LinkButton ID="lbtn_delete" runat="server" onclick="lbtn_first_Click">delete</asp:LinkButton>
                                </td>
                            </tr>
                        </table>
                        <br />
                    </asp:Panel>`

i tried to remove the table but in vain it does not work also.

Answer 1

You need to put the LinkButtons in the UpdatePanel or put them in their own UpdatePanel.

Answer 2

You appear to be missing a ScriptManger defined before your update panel such as

<asp:ScriptManager ID="ScriptManager1" runat ="server"></asp:ScriptManager>

I think that is probably causing your problem.

Controls outside of the panel can invoke a partial postback.

Paul