I have a news and announcement web part that I would liek to refresh every 5 or 10 minutes so users get the latest information. I have a bunch of asp controls within an update panel's contenttemplate. What code do I need to refresh or update the web part every 5 or 10 minutes?

  <asp:UpdatePanel ID="UpdatePanel1" runat="server">
    <asp:Repeater ID="repAnnouncements" runat="server">
            <td style="padding-right:15px; padding-top:1px;">
                <asp:HyperLink ID="hypImageEditLink" runat="server">
                    <asp:Image ID="imgLink" runat="server" Width="150px" Height="110px" ImageUrl='<%#Eval("Images")%>'/>
                <br/><br />
                <asp:HyperLink ID="hypTextEditLink" runat="server" Text='<%#Eval("Title")%>' CssClass="TitleStyle"/>
                <asp:HiddenField ID="ItemID" Value='<%#Eval("ID") %>' runat="server" />

   <asp:Label ID="test" runat="server" Visible="false" />

If you just want to update using the ASP.NET AJAX UpdatePanel, then just add a Timer Control

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