title: OnCheckedChanged event not firing in GridView at all
body: <p>I have a GridView with an asp CheckBox in a TemplateField. The TemplateField is defined as follows:</p>
  
  <pre><code>&lt;asp:TemplateField HeaderText="HeaderName"&gt;
      &lt;ItemTemplate&gt;
          &lt;asp:CheckBox ID="checkBoxId" runat="server" OnCheckedChanged="MyCheckChangedMethod" AutoPostBack="true"/&gt;
      &lt;/ItemTemplate&gt;
  &lt;/asp:TemplateField&gt;
  </code></pre>
  
  <p>When I run my web project with a breakpoint inside MyCheckChangedMethod and click the checkbox nothing happens. The breakpoint is not hit. My Visual Studio debugger is running.</p>
  
  <p>Additionally, I have AutoEventWireup = True in my page defnition so I don't have to manually hook up the event. I have never had a problem doing it this way before. I have a button on the same page setup the exact same way with a click event and the breakpoint gets hit fine in that.</p>
  
  <p>Any ideas?</p>