Mulitiple File Upload

  $("#<%=FileUpload1.ClientID%>").fileUpload({
            'uploader': 'scripts/uploader.swf',
            'cancelImg': 'images/cancel_upload.png',
            'buttonText': 'Browse Files',
            'script': 'Upload.ashx',
            'folder': 'uploads',
            'queueSizeLimit': '2',
            'fileDesc': 'Image Files',
            'fileExt': '*.jpg;*.jpeg;*.gif;*.png;*.doc;*.docx;*.pdf;*.txt;*.bmp;*.ppt;*.pptx',
            'multi': true,
            'auto': false,
          
          
            'onAllComplete': function () {
                 
               $find('NewFileUploadModalPopupExtender').hide();
                $(document).ready(function () {
                    $('#ContentPlaceHolder1_ImageButton4').trigger('click');
                });
            },
           
);
 public class Upload : IHttpHandler, System.Web.SessionState.IRequiresSessionState
    {

        public void ProcessRequest(HttpContext context)
        {
 if (HttpContext.Current.Session["strFilepath"] != null && HttpContext.Current.Session["strParentID"] != null)
            {
                //objError.WriteLog(HttpContext.Current.Session["strHandlerParentID"].ToString(), HttpContext.Current.Session["strHandlerParentID"].ToString(), Path.GetFileName(context.Request.Url.AbsolutePath));
                HttpFileCollection fileCollection = context.Request.Files;
                if (context.Request.Files.Count > 0)
                {
                    string filepath = HttpContext.Current.Session["strFilepath"] as string;
                    string parentid = HttpContext.Current.Session["strParentID"] as string;
                    // get the applications path 
                    for (int j = 0; j <= context.Request.Files.Count - 1; j++)
                    {
                        HttpPostedFile uploadFile = context.Request.Files[j];
                        TUIPortal.Core.ImageUtilities objNew = new TUIPortal.Core.ImageUtilities();
                        if ((CheckFileExtension(System.IO.Path.GetExtension(uploadFile.FileName)) == true) && CheckMaximumFileSize(uploadFile.ContentLength) == true)
                        {
                            string strFileName = objNew.DoUpload(uploadFile, filepath, int.Parse(parentid));
                           
                            
                        }
                    }
                }}

<sessionstate timeout="20" cookieless="true"></sessionstate>