title: How to fire an event when dropdown inside Repeater changes
body: <p>I want to do some actions in my database when user change dropdown's selectedIndex.Now I have the following.</p>
  
  <pre><code>&lt;td class="shop-item-qty"&gt;
  &lt;asp:DropDownList ID="qtyDropDownList" OnSelectedIndexChanged="changeCount" AutoPostBack="true"  runat="server"/&gt;
  &lt;asp:HiddenField ID="ItemId" runat="server" Value='&lt;%#Eval("GiftVoucher.ID") %&gt;'/&gt;
  &lt;/td&gt;
  </code></pre>
  
  <p>All I want is to get my hidden fields value in <code>changeCount</code> method. The problem is that I can't directly get hidden fields value, because this code is in <code>Repeater</code> element. How can I achieve that functionality?</p>