title: Why asp.net dropdown with autopostback doesn't keep my selected value
body: <p>As advised here <a href="https://stackoverflow.com/questions/12737240/asp-net-response-redirectrequest-rawurl-doesnt-work/12737254#12737254">ASP.NET Response.Redirect(Request.RawUrl) doesn&#39;t work</a> I did put autopostback = true on a dropdown list to reload my page.</p>
  
  <p>But after reloading it resets also the selected item to first one.</p>
  
  <p>How to keep my previous value before reloading the page then ? I thought autopostback would do that job ?</p>