c# - Updatepanel gives full postback instead of asyncpostback -


i have run seems famous problem: updatepanel fires full postback instead of async postback. normal solution give controls add dynamically id, have done, still full postback instead of async postback...

here's code:

html:

<asp:updatepanel id="itemsupdatepanel" runat="server" updatemode="conditional" childrenastriggers="false">    <triggers>    </triggers>        <contenttemplate>    <asp:listview id="playeritems" runat="server" groupitemcount="5"                                      onitemdatabound="playeritems_itemdatabound">    <layouttemplate>     ... listview stuff ...      </asp:listview>       </contenttemplate> </asp:updatepanel>

the interesting part c# code behind (method playeritems_itemdatabound), following:

            imagebutton imgbtn = new imagebutton();             imgbtn.id = "itembtn";             imgbtn.width = unit.pixel(30);             imgbtn.imageurl = "~/images/game/items/" + myitem.itemimageurl;              contextmenu menu = new contextmenu();             menu.boundcontrols.add(imgbtn);             menu.itemcommand += new commandeventhandler(menu_itemcommand);              menu.autohide = true;             menu.rollovercolor = color.gray;             menu.id = "menumenu";              panel panel = (panel)(e.item.findcontrol("itempanel"));             panel.controls.add(imgbtn);             panel.controls.add(menu);              asyncpostbacktrigger trig = new asyncpostbacktrigger();             trig.controlid = menu.uniqueid;             trig.eventname = "itemcommand";             itemsupdatepanel.triggers.add(trig);

so, add asyncpostbacktrigger menu, itemcommand event should registered. happends when click item in contextmenu, full postback happends.

i have been trying play childrenastriggers property without help. have been moving asyncpostbacktrigger code , down, without help.

thanks lot beforehand..! lars

from asyncpostbacktrigger documentation:

programmatically adding asyncpostbacktrigger controls not supported. programmatically register postback control, use registerasyncpostbackcontrol method of scriptmanager control. call update method of updatepanel control when control posts back.


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