Uploaded files through async file upload not reflecting in gridview

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ASP.NET

Ajax

Hello,

Am uploading files through async file upload ajax control.The control is in update panel.After uploading gridview,The gridview is not instantly loaded.Only on page load,its getting reflected.Please help me

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional"
         ><ContentTemplate>
             <ajaxToolkit:AsyncFileUpload ID="AsyncFileUpload1" runat="server"  OnUploadedComplete="AsyncFileUpload1_UploadedComplete"/>
             <asp:GridView ID="grdUploadDetails" runat="server" AutoGenerateColumns="False" DataKeyNames="FileName"
                 ForeColor="Black" AllowPaging="True" PageSize="100" AllowSorting="True" PagerSettings-Position="TopAndBottom" OnRowCommand="grdUploadDetails_RowCommand">

                 <PagerSettings Position="TopAndBottom" />
                 <RowStyle HorizontalAlign="left" />
                 <HeaderStyle Font-Bold="True" HorizontalAlign="left" />
                 <FooterStyle />
                 <PagerStyle ForeColor="Black" HorizontalAlign="Left" />
                 <SelectedRowStyle Font-Bold="True" ForeColor="White" />
                 <AlternatingRowStyle HorizontalAlign="left" />
                 <Columns>

                     <asp:BoundField DataField="FileName" HeaderText="File Name">
                         <ItemStyle Width="360px" />

                     </asp:BoundField>
                     <asp:BoundField DataField="Length" HeaderText="File Size in kb"></asp:BoundField>
                     <%--<asp:BoundField DataField="DateCreated" HeaderText="Date" DataFormatString="{0:d}">
          <HeaderStyle HorizontalAlign ="Center" />
          <ItemStyle  HorizontalAlign ="Center"  />
          </asp:BoundField>--%>
                     <%--   <asp:BoundField DataField="Count" HeaderText="No of Visitors" >--%>
                     <%--<ItemStyle  HorizontalAlign ="Center"  />
               <HeaderStyle HorizontalAlign ="Center" />
          </asp:BoundField>--%>
                     <asp:TemplateField HeaderText="Download">
                         <ItemStyle HorizontalAlign="Center" />
                         <ItemTemplate>
                             <asp:UpdatePanel ID="UpdatePanel2" runat="server">
                                 <ContentTemplate>
                                     <asp:LinkButton ID="lnkDownload" CommandArgument='<%# Eval("FileName") %>' runat="server" CommandName="Select"><img src="images/download.png" alt="Download"  height="20" width="20"/></asp:LinkButton>
                                 </ContentTemplate>
                                 <Triggers>
                                     <asp:PostBackTrigger ControlID="lnkDownload" />
                                 </Triggers>
                             </asp:UpdatePanel>
                         </ItemTemplate>
                     </asp:TemplateField>
                     <asp:TemplateField HeaderText="Delete">
                         <ItemStyle HorizontalAlign="Center" />
                         <ItemTemplate>

                             <asp:LinkButton ID="lnkDelete" Text="Delete" CommandArgument='<%# Eval("FileName") %>' runat="server" CommandName="Remove" OnClientClick="return confirm('Delete Files from Folder ?' )"><img  src="images/delete.png" alt="Download"   height="20" width="20"/></asp:LinkButton>
                         </ItemTemplate>
                     </asp:TemplateField>
                 </Columns>



             </asp:GridView>
         </ContentTemplate>
          <Triggers>

              <asp:PostBackTrigger ControlID="AsyncFileUpload1" />
          </Triggers>
          </asp:UpdatePanel>

protected void AsyncFileUpload1_UploadedComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
   {
       string filePath = "~/DownloadableDocs/" + e.FileName;
       AsyncFileUpload1.SaveAs(MapPath(filePath));
       LoadFiles();
      
       UpdatePanel1.Update();

   }

Load files is a function to load gridview with uploadedfiles.