c# - How to get selected dropdownvalue in AjaxFileUpload onuploadComplete event? -

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      <%@ page language="c#" autoeventwireup="true" codefile="test.aspx.cs"  inherits="test"%>        <%@ register assembly="ajaxcontroltoolkit" namespace="ajaxcontroltoolkit" tagprefix="asp" %>         <!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en"    "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">        <html xmlns="http://www.w3.org/1999/xhtml">        <head runat="server">        <title></title>       </head>       <body style="height: 162px"> <form id="form1" runat="server"> <div>      <asp:radiobutton id="mca" runat="server" text="mca" autopostback="true"          oncheckedchanged="mca_checkedchanged" />     <br />  </div> <asp:dropdownlist id="dropdownlist1" runat="server" autopostback="true">     <asp:listitem value="sem1"></asp:listitem>     <asp:listitem value="sem2"></asp:listitem> </asp:dropdownlist> <br /> <asp:dropdownlist id="dropdownlist2" runat="server" autopostback="true"      onselectedindexchanged="dropdownlist2_selectedindexchanged"      viewstatemode="enabled">     <asp:listitem value="mca101"></asp:listitem>     <asp:listitem value="mca103">mca103</asp:listitem> </asp:dropdownlist> <br /> <asp:scriptmanager id="scriptmanager1" runat="server"> </asp:scriptmanager> <br />  <asp:updatepanel id="updatepanel1" runat="server">     <contenttemplate>      <br />         <asp:ajaxfileupload id="ajaxfileupload1" runat="server"              onuploadcomplete="upload"/>     <br />     </contenttemplate> </asp:updatepanel> </form> </body> </html>

event code..

      protected void upload(object sender, ajaxcontroltoolkit.ajaxfileuploadeventargs e)       {         string s = dropdownlist1.selectedvalue;         string t = dropdownlist2.selectedvalue;         string path= string path = server.mappath("~/mca/" + s + "/" +t+ "/")+e.filename        }

//both s , t first value of dropdownlist if other value selected , that's uploading not done per directort structure.

both dropdownlist have several values , postback property true both list.

how exact selected value of list ?

issue request.form["__viewstate"] = null when ajaxfileupload onuploadcomplete event called.

fix issue (c# code):

set dropdown selection in session @ page load.

protected void page_load(object sender, eventargs e) {  if (request.form["__viewstate"] != null)     session["path"] = "//" + dropdownlist1.selectedvalue + "//" + dropdownlist2.selectedvalue + "//"; }

use session value creation of filepath:

protected void upload(object sender, ajaxcontroltoolkit.ajaxfileuploadeventargs e) {         string path = string.empty;         if (session["path"] != null)             path = server.mappath("~//mca" + (string)session["path"]) + e.filename; }

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