c# - AJAX ComboBox - dropdown button missing -

using ajax combobox inside of accordion control. in fact, accordion control nested inside accordion, if problem.

anyway -- have 2 combo boxes - on first 1 seems on page postback drop down button see list of available items disappears. on second one, never there.

here code:

  <asp:accordionpane id="pane1" runat="server" headercssclass="accordionheader" contentcssclass="accordioncontent" >  <header> query view </header>  <content>           <asp:label id="lbl_chkone" cssclass="label" runat="server" text="by user" ></asp:label>             <input id="chk_one" type="checkbox" onclick="changepane(0,this)" groupkey="query" />         <asp:label id="lbl_chktwo" cssclass="label" runat="server" text="all users" ></asp:label>             <input id="chk_two" type="checkbox" onclick="changepane(1,this)" groupkey="query" />         <asp:label id="lbl_chkthree" cssclass="label" runat="server" text="other" ></asp:label>             <input id="chk_three" type="checkbox" onclick="changepane(2,this)" groupkey="query" />             <br />             <br />             <asp:accordion id="inneraccordion" runat="server">             <panes>             <asp:accordionpane id="pane3" runat="server" visible="true" >             <content>                     <asp:panel id="panel1" runat="server">         <asp:label id="label2" runat="server" text="select user:"                      style="margin-left:28px" ></asp:label>                      <asp:combobox id="cbox_user" runat="server" autocompletemode="suggestappend">                     </asp:combobox>                 <asp:label id="label3" runat="server" text="select month:"                                  style="margin-left:28px" ></asp:label>             <asp:textbox id="txt_date" runat="server"></asp:textbox>              <asp:label id="label1" runat="server" text="enter price:"                                  style="margin-left:28px" ></asp:label>              <asp:textbox id="txt_price" runat="server"></asp:textbox>                 <asp:calendarextender id="calendarextender1" runat="server"                              targetcontrolid="txt_date"                              format="mmmm yyyy"                              onclientshown="oncalendarshown"                             onclienthidden="oncalendarhidden"                             behaviorid="calendar1" >                 </asp:calendarextender>                 <br />                 </asp:panel>             </content>             </asp:accordionpane>             <asp:accordionpane id="pane4" runat="server" visible="true" >             <content>               <asp:panel id="panel4" runat="server">                 <asp:label id="label10" runat="server" text="select group:"                      style="margin-left:28px" ></asp:label>                      <asp:combobox id="cbox_group" runat="server" >                     <asp:listitem text="all groups"> </asp:listitem>                     <asp:listitem text="customers" > </asp:listitem>                     <asp:listitem text="employees" > </asp:listitem>                     </asp:combobox>                  <asp:label id="label11" runat="server" text="select month:"                                  style="margin-left:28px" ></asp:label>                 <asp:textbox id="textbox5" runat="server"></asp:textbox>              <asp:label id="label12" runat="server" text="enter price:"                                  style="margin-left:28px" ></asp:label>              <asp:textbox id="textbox6" runat="server"></asp:textbox>                  <br />         </asp:panel>             </content> 

cbox_user 1 displays button , disappears on postback. cbox_groups 1 never shows button.

here code behind binds data cbox_user:

        protected void bindusers()     {         iqueryable<aquser> query = users in db.aquser                                    orderby users.username                                    select users;           cbox_user.datasource = query;         cbox_user.datatextfield = "username";         cbox_user.datavaluefield = "username";          cbox_user.databind();      }     protected void page_load(object sender, eventargs e)     {         db = new dbentities();         bindusers();          if (!page.ispostback)             outeraccordion.panes[1].visible = false;         else             outeraccordion.panes[1].visible = true;      } 

i couldn't find on internet except posts possibily being related divs / css alignment.

any ideas?

never solve this. must big need fix.

i used dropdownlist instead of combobox , works fine.