title: linkbutton doesn't work for updatepanel
body: <p>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</p>
  
  <p>my source code:</p>
  
  <p><code>&lt;asp:Panel ID="pnl_viewImages" runat="server"&gt;</code></p>
  
  <pre><code>&lt;asp:Label ID="lbl_viewImages" runat="server" style="texalign: left" 
      Text="view images :"&gt;&lt;/asp:Label&gt;
  &lt;br /&gt;
  &lt;br /&gt;
  &lt;br /&gt;
  
  &lt;table cellpadding="0" cellspacing="0" style="width: 100%" class ="Alternating"&gt;
      &lt;tr&gt;
          &lt;td colspan="5"&gt;
  
              &lt;asp:UpdatePanel ID="updatePnl_image" runat="server"&gt;
                  &lt;ContentTemplate&gt;
                      &lt;asp:ListView ID="lv_showImages" runat="server"&gt;
                          &lt;ItemTemplate&gt;
                              &lt;asp:Image ID="img_showNewsImage0" runat="server" Height="300px" 
                                  ImageUrl='&lt;%# "RetreiveImage.ashx" %&gt;' Width="413px" /&gt;
                          &lt;/ItemTemplate&gt;
                      &lt;/asp:ListView&gt;
                  &lt;/ContentTemplate&gt;
                  &lt;Triggers&gt;
                      &lt;asp:AsyncPostBackTrigger ControlID="lbtn_first" EventName="Click" /&gt;
                      &lt;asp:AsyncPostBackTrigger ControlID="lbtn_last" EventName="Click" /&gt;
                      &lt;asp:AsyncPostBackTrigger ControlID="lbtn_next" EventName="Click" /&gt;
                      &lt;asp:AsyncPostBackTrigger ControlID="lbtn_previous" EventName="Click" /&gt;
                      &lt;asp:AsyncPostBackTrigger ControlID="lbtn_delete" EventName="Click" /&gt;
                  &lt;/Triggers&gt;
              &lt;/asp:UpdatePanel&gt;
  
          &lt;/td&gt;
      &lt;/tr&gt;
      &lt;tr&gt;
          &lt;td&gt;
              &lt;asp:LinkButton ID="lbtn_first" runat="server" onclick="lbtn_first_Click"&gt;first&lt;/asp:LinkButton&gt;
          &lt;/td&gt;
          &lt;td&gt;
              &lt;asp:LinkButton ID="lbtn_previous" runat="server" onclick="lbtn_first_Click"&gt;&amp;lt;&amp;lt;&lt;/asp:LinkButton&gt;
          &lt;/td&gt;
          &lt;td&gt;
              &lt;asp:LinkButton ID="lbtn_next" runat="server" onclick="lbtn_first_Click" 
                  &gt;&amp;gt;&amp;gt;&lt;/asp:LinkButton&gt;
          &lt;/td&gt;
          &lt;td&gt;
              &lt;asp:LinkButton ID="lbtn_last" runat="server" onclick="lbtn_first_Click"&gt;last&lt;/asp:LinkButton&gt;
          &lt;/td&gt;
          &lt;td&gt;
              &lt;asp:LinkButton ID="lbtn_delete" runat="server" onclick="lbtn_first_Click"&gt;delete&lt;/asp:LinkButton&gt;
          &lt;/td&gt;
      &lt;/tr&gt;
  &lt;/table&gt;
  &lt;br /&gt;
  </code></pre>
  
  <p></p>
  
  <p>i tried to remove the table but in vain it does not work also. </p>