asp.net - how can i to access Control in UpdatePanel for Read value controls? -


i can't find dropdownlist ,because inside update panel other control outside update panel can find using following code: 

for each c control in form1.page.controls                 findcontrol(c)         next       private function findcontrol(c control)              each k control in c.controls                 if typeof k dropdownlist                     if ctype(k, dropdownlist).id = "c1"                         ctype(k, dropdownlist).selecteditem.value = 2                     end if                     findcontrol(k)                 end if             next              return ""         end function

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<td class="combo_ghaza">                         <asp:updatepanel id="upc1" runat="server">                         <contenttemplate>                             <asp:dropdownlist runat="server" width="180px" id="c1"  class="combo_ghaza" enableviewstate="true" font-names="myfirstfont" autopostback="true" onselectedindexchanged="c1_selectedindexchanged">                             </asp:dropdownlist>                              <asp:dropdownlist id="cs1"  runat="server" width="70px"   class="combo_ghaza"  initialvalue="-1" font-names="myfirstfont">                             </asp:dropdownlist>                             </contenttemplate>                             </asp:updatepanel>                          </td>

the recursive call seems in wrong position, try move 1 line down

private function findcontrol(c control)      each k control in c.controls         if typeof k dropdownlist             if ctype(k, dropdownlist).id = "c1"                 ctype(k, dropdownlist).selecteditem.value = 2             end if         end if         findcontrol(k)     next      return ""  end function

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