Question

Update progress not working.The code is given below,When i am clicking on any button in the grid(paging,filtering etc) the progress is working.But when i am clicking on the image button the progress not working.

<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="upnlStockList"
        DisplayAfter="0" DynamicLayout="true">
        <ProgressTemplate>
            <div class="PopupPanel">
                <table style="vertical-align: middle; width: 100%; height: 900px">
                    <tr>
                        <td valign="middle" align="center">
                            <img id="Img1" src="~/Images/loading.gif" runat="server" />
                        </td>
                    </tr>
                </table>
            </div>
        </ProgressTemplate>
    </asp:UpdateProgress>
<asp:UpdatePanel ID="upnlStockList" runat="server" ChildrenAsTriggers="true" UpdateMode="Always">
        <ContentTemplate>
            <grid></grid>
        </ContentTemplate>
        <Triggers>
            <asp:PostBackTrigger ControlID="imgPDF" />
            <asp:PostBackTrigger ControlID="imgExcel" />
            <asp:PostBackTrigger ControlID="imgCSV" />
        </Triggers>
    </asp:UpdatePanel>
    protected void imgExcel_Click(object sender, ImageClickEventArgs e)
     {
            (initializing the report and assigning parameter).
            ReportProcessor reportProcessor = new ReportProcessor();
            RenderingResult result = reportProcessor.RenderReport(PDF, rptStockList, null);
            string fileName = result.DocumentName + ".pdf";
            Response.Clear();
            Response.ContentType = result.MimeType;
            Response.Cache.SetCacheability(HttpCacheability.Private);
            Response.Expires = -1;
            Response.Buffer = true;
            Response.AddHeader("Content-Disposition", string.Format("{0};FileName=\"{1}\"", "attachment", fileName));
            Response.BinaryWrite(result.DocumentBytes);
            Response.End();
     }
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>

script manager in master page
By clicking the image button i am downloading the report as pdf.

Answer 1

<asp:AsyncPostBackTrigger>

The AsyncPostBackTrigger Specifies a control and event that will cause a partial page update for the UpdatePanel that contains this trigger reference.

<asp:PostBackTrigger>

The PostBackTrigger Specifies a control and event that will cause a full page update (a full page refresh). This tag can be used to force a full refresh when a control would otherwise trigger partial rendering.

So try to use like this.

<asp:AsyncPostBackTrigger ControlID="imgPDF" />
<asp:AsyncPostBackTrigger ControlID="imgExcel" />  
<asp:AsyncPostBackTrigger ControlID="imgCSV" /> 

Hope this may helpful…