Whats the purpose of adding the <ContentTemplate> inside the UpdatePanel?

Example:

        <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>
        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
                <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
                <asp:Button runat="server" Text="Button" onclick="Unnamed1_Click" />
            </ContentTemplate>
        </asp:UpdatePanel>

I got the answer to the question.

Any content that needs to be changed with the asynchronous model should be specified in the <ContentTemplate> section of the <UpdatePanel> panel

consider this thread to be closed