File upload control not working with update panel

Hi,

I am working with Asp.Net FileUpload control with ajax update panel,

if i use the AsyncPostBackTrigger,i am unable to get the filename in serverside,
but if i use PostBackTrigger its working fine with page refreshing

my Html code is:

I dont want to refresh page while uploading file.

Please tell me.

Hi ,if you don't want to refresh the page then create a user control and use the user control in update panel.

like this.

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="FileUploadControl.ascx.cs" Inherits="Controls_FileUploadControl" %>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>

<%-- --%>

                             Enabled="True" TargetControlID="btnUploadFile" PopupControlID="pnlUploadDocuments" BackgroundCssClass="modal"
                CancelControlID="lkBtnCancel" PopupDragHandleControlID="pnlUploadDocuments">

     <%--
      --%>


      <%--



      --%>

<%--

--%>