Update Progress not work with in Postback trgigger

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C#

hello,

I am using the postback trigger and update progress. but update progress not work with in Postback Trigger.


i use the file uploader control in the page and also want to do update progress when the button is clicked and also save the file uploader file.

so, how can i do ?

<div align="left">
 <asp:ScriptManager ID="sc1" runat="server"></asp:ScriptManager>
 <asp:UpdatePanel ID="u1" runat="server">
 <ContentTemplate>
<table border="1" width="100%">
<tr>
<td colspan="2" align="center">
    <asp:Label ID="Label1" runat="server" Text="User News Area" Font-Size="Large" 
        ForeColor="Black"></asp:Label>
</td>
</tr>

<tr>
<td colspan="2" align="center">
    <asp:Label ID="lbl_msg" runat="server" Font-Size="Large" ForeColor="Green" Visible="false"></asp:Label>
</td>
</tr>
<tr>
<td align="left">
    <asp:Label ID="Label2" runat="server" Text="Select Department" 
        Font-Size="Medium" ForeColor="Black" ToolTip="Select Department"></asp:Label>
</td>

<td align="left" width="60%">
    <asp:DropDownList ID="drop_dept" runat="server" Font-Size="Medium" Width="95%" 
        AutoPostBack="True" 
        onselectedindexchanged="drop_dept_SelectedIndexChanged">
    <asp:ListItem>Select</asp:ListItem>
    </asp:DropDownList>
</td>

</tr>

<tr>
<td align="left">
    <asp:Label ID="Label3" runat="server" Text="Select User" 
        Font-Size="Medium" ForeColor="Black" ToolTip="Select User"></asp:Label>
</td>

<td align="left" width="60%">
    <asp:DropDownList ID="drop_user" runat="server" Font-Size="Medium" Width="95%">
    <asp:ListItem>Select</asp:ListItem>
    </asp:DropDownList>
</td>

<tr>
<td align="left">
    <asp:Label ID="Label5" runat="server" Text="Upload File" 
        Font-Size="Medium" ForeColor="Black" ToolTip="Select File"></asp:Label>
</td>

<td align="left" width="60%">
    <asp:FileUpload ID="FileUpload1" runat="server" Font-Size="Medium" 
        Width="95%" />
</td>

</tr>
<tr>
<td align="left">
    <asp:Label ID="Label4" runat="server" Text="Enter Message" Font-Size="Medium" 
        ForeColor="Black"></asp:Label>
</td>
<td align="left" width="60%">
    <asp:TextBox ID="txt_msg" runat="server" TextMode="MultiLine" 
        Font-Size="Large" ForeColor="Black" Height="150px" Width="330px"></asp:TextBox>
</td>
</tr>

<tr>
<td align="center" colspan="2">
    <asp:Button ID="Button1" runat="server" Text="Click Here" Font-Size="Large" 
        ForeColor="Black" OnClientClick="return validate()" 
        onclick="Button1_Click"/>
</td>
</tr>
<tr>
<td colspan="2" align="center">
                    <asp:UpdateProgress ID="up1" runat="server" AssociatedUpdatePanelID="u1">
                    <ProgressTemplate>
                    <div align="center">
                    <img src="../Admin/images/progress.gif" align="middle" /> Please Wait..
                    </div>
                    </ProgressTemplate>
                    </asp:UpdateProgress>
</td>
</tr>
</table>
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger   ControlID="Button1" />
</Triggers>
</asp:UpdatePanel>
</div>