update progress is not working

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

    <ContentTemplate>
<div id="div1" style="background-color: #000000"  runat="server">
<asp:Image ID="image1" runat="server" AlternateText="Ledbulb" ImageUrl="Images/Transparent_Bulb.png" />
    ;<asp:Image ID="image2" runat="server" AlternateText="Ledbulb" ImageUrl="Images/Transparent_Bulb.png" />

<asp:Image ID="image3" runat="server" AlternateText="Ledbulb" ImageUrl="Images/Transparent_Bulb.png" />

<asp:Image ID="image4" runat="server" AlternateText="Ledbulb" ImageUrl="Images/Transparent_Bulb.png" />
    <br />
    <asp:Image ID="Image5" runat="server" Width="100%" ImageUrl="~/Images/Road.PNG" />
    <br />

    <asp:Label ID="Label1" runat="server" Text="PoleID : P1" ForeColor="White" Font-Bold="True"></asp:Label>

    <br />
    <asp:Label ID="Label5" runat="server" Font-Bold="True" ForeColor="White"
        Text="DutyCapaciy :"></asp:Label>
<asp:Label ID="lblDC1" runat="server" ForeColor="White" >NULL</asp:Label>

</div><br>
<asp:Button ID="Button2" runat="server" Text="Display"/>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress1" runat="Server" AssociatedUpdatePanelID="UpdatePanel1" DisplayAfter="1" >
<ProgressTemplate>Update in Progress……..  </ProgressTemplate>
</asp:UpdateProgress>