c# - ajax CollapsiblePanelExtender inside datalist -

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i creating data list have multiple person records displayed inside collapsible panel , iside each dataitem user can edit record etc.

following code

 <%@ register tagname="createeditperson" src="~/ascx/create_edit_person.ascx" tagprefix="wd" %> <asp:datalist id="dlperson" runat="server" onitemdatabound="dlperson_onitemdatabound">         <itemtemplate>           <div class="personrow">                 <div class="personrowheader" id="diveditperson">                       <div class="lastnamecolumn">                            <asp:label id="lbllastname" runat="server"></asp:label    </div>                         <div class="firstnamecolumn">                             <asp:label id="lblfirstname" runat="server"></asp:label>                       </div>                       <div class="editcolumn">                             <asp:image id="imgexpandimage" runat="server" class="divsearchlabel" meta:resourcekey="imgexpandimage" />                             <asp:label id="lbleditperson" runat="server" meta:resourcekey="lbleditperson"></asp:label>                       </div>                       <div style="clear: both">                  </div>             </div>             <ajaxtoolkit:collapsiblepanelextender id="cpperson" runat="server" meta:resourcekey="cpperson"                     collapsed="true" targetcontrolid="pnlpersonedit" collapsecontrolid="diveditperson"                     expandcontrolid="diveditperson" textlabelid="lbleditperson" collapsedsize="0"                     scrollcontents="false" suppresspostback="true" imagecontrolid="imgexpandimage">                     </ajaxtoolkit:collapsiblepanelextender>                     <asp:panel id="pnlpersonedit" runat="server">                         <div class="product_technical_details">                             <wd:createeditperson id="createeditperson1" runat="server" />                         </div>                     </asp:panel>                 </div>             </itemtemplate> </asp:datalist>

my problem is, 1. when click on 1st dataitem panel, panels expands. need dynamic id of targetcontrolid ?

i solved follows: on itemdatabound event of datalist, set dynamic id of collapsible panel, target panel , collaped/expand control; , set "targetcontrolid", "collapsecontrolid" , "expandcontrolid" giving code snippet here:

protected void dlperson_onitemdatabound(object sender, datalistitemeventargs e) {     if (e.item.itemtype == listitemtype.item || e.item.itemtype == listitemtype.alternatingitem)     {         //find controls in item template         panel pnlpersonedit = e.item.findcontrolrecursive("pnlpersonedit") panel;         collapsiblepanelextender cppersonedit =             e.item.findcontrolrecursive("cppersonedit") collapsiblepanelextender;          //this panel div "diveditperson" have changed panel         panel pnleditpersonhead = e.item.findcontrolrecursive("pnleditpersonhead") panel;          //some object db         personobject personobject = e.item.dataitem personobject;          //set id of collapsed/expanded panel unique key         pnleditpersonhead.id += personobject.crmddressid.tostring();          //set id of target panel unique key         pnlpersonedit.id += personobject.crmddressid.tostring();          //simillarly set id of collapsible panel extender         cppersonedit.id += personobject.crmddressid.tostring();          //now set targetcontrolid, collapsecontrolid , expandcontrolid          cppersonedit.targetcontrolid = pnlpersonedit.id;         cppersonedit.collapsecontrolid = pnleditpersonhead.id;         cppersonedit.expandcontrolid = pnleditpersonhead.id;       } }

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