ext="Export" href="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions(&quot;_ctl0:ContentButtonsLeft:btnExport&quot;, &quot;&quot;, true, &quot;&quot;, &quot;&quot;, false, true))">Export</a>
    </div>
    
    <input name="_ctl0:ContentButtonsLeft:txtSelectedList" type="hidden" id="_ctl0_ContentButtonsLeft_txtSelectedList" value="1~2~3~4~5~6~7~8" />
    <input name="_ctl0:ContentButtonsLeft:txtAvailableList" type="hidden" id="_ctl0_ContentButtonsLeft_txtAvailableList" />

         