c# - DataList SelectedIndexChange event not firing -

i have hyperlink , hidden field inside datalist shown below

<asp:datalist id="clientslist" runat="server" onselectedindexchanged="clientslist_selectedindexchanged1" >    <itemtemplate>       <asp:hyperlink id="hlname" runat="server" text='<%# bind("name") %>' navigateurl="#" ></asp:hyperlink>       <asp:hiddenfield id="hiddenfieldid" runat="server" value='<%# eval("id") %>' />                         </itemtemplate> </asp:datalist> 

when user clicks on hyperlink, need store value in application variable. selectedindexchange event never fires.

this code:

protected void clientslist_selectedindexchanged1(object sender, eventargs e) {                     int idx = clientslist.selectedindex;         hiddenfield hiddencid = clientslist.items[idx].findcontrol("hiddenfieldid") hiddenfield;          if (hiddencid != null)         {             logger.updatelog("selected id: " + hiddencid.value.tostring());         }     } 

i binding data database datalist in page_load event below , working fine.

protected void page_load(object sender, eventargs e) {     if (!ispostback)     {        binddatalist();     }            } 

any idea why event never fired?

also code right far accessing hiddenfield value concerned?

have set commandname property of hyperlink field?

<asp:linkbutton id="linkbutton1" runat="server" commandname="select">select</asp:linkbutton> 

now in selectedindexchanged method:

 protected void datalist1_selectedindexchanged(object sender, eventargs e) {     int idx = datalist1.selectedindex;     label lbl = (label)datalist1.items[idx].findcontrol("label1");     int id =convert.toint32(datalist1.selectedvalue); } 

does work?