c# - Hidden field not updated in updatepanel after putting listview into insert mode -

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i'm having problem hidden field value set in code-behind not propagate client. basic layout follows:

<asp:updatepanel .....  <contenttemplate ....     <input id="myhiddenfield" type="hidden" value="" runat="server" ....      <asp:listview id="mylistview" .....

i have button on click event, in there set hidden field value. if don't put listview insert mode, value propagated client; however, if put listview insert mode, nothing. i'm rebinding datasource on listview.

void mybutton_click(object sender, eventargs e) {     myhiddenfield.value = "testing";     mylist.insertitemposition = insertitemposition.firstitem;     mylist.datasource = // datasource     mylist.databind(); }

side note: i'm rebinding listview data bound delegate can called , can stuff in there.

instead of <input id="myhiddenfield" type="hidden" value="" runat="server" use <asp:hiddenfield id="myhiddenfield" runat="server" /> , should fine.


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