'System.Web.UI.UpdatePanel' does not have a public property named 'table'

I've received a error message "System.Web.UI.UpdatePanel' does not have a public property named 'table'" when trying to use AJAX.NET.

The code:

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<table>

</table>
</ContentTemplate>
</asp:UpdatePanel>

After surf for a while, i found the solution on this issue. We need to put <ContentTemplate> <table> ... </table> </ContentTemplate>

This solve the problem.