Update panl in asp.net?
<p>In web application, i am working on update panel, when i place radio button list control in update panel and click on radio button it is showing error like :</p>

<pre><code>                  Microsoft JScript runtime error:
                  Sys.WebForms.PageRequestManagerParserErrorException:
                  The message received from the server could not be parsed.
                  Common causes for this error are when the response is modified
                  by calls to Response.Write(), response filters, HttpModules, 
                  or server trace is enabled.
</code></pre>

<p>My plce the controls like this:</p>

<pre><code>       &lt;asp:UpdatePanel ID="UpdatePanel1" runat="server"&gt;  
               &lt;ContentTemplate&gt;                                        
                   &lt;asp:RadioButtonList ID ="rdbutTrip" runat ="server"  Font-Bold="true"  RepeatDirection="Horizontal" GroupName="g" AutoPostBack="True"   onselectedindexchanged="rdbutTrip_SelectedIndexChanged"   &gt;
                       &lt;asp:ListItem Text="Route Wise Report" Value ="R"&gt;&lt;/asp:ListItem&gt; 
                         &lt;asp:ListItem Text="Transport Wise Report" Value ="T"&gt;&lt;/asp:ListItem&gt; 
                   &lt;/asp:RadioButtonList&gt;
               &lt;/ContentTemplate&gt;
              &lt;/asp:UpdatePanel&gt;
</code></pre>

<p>Please help me thank you.</p>
