asp.net页面下载后，ie6窗体不关闭，ie7,8可以关闭

 下载方法：
private void DownLoad(string path, string filename, string filetype)
    {

        try
        {
            path = Server.MapPath(path);
            FileInfo fileInfo = new FileInfo(path);
            Response.Clear();
            Response.ClearContent();
            Response.ClearHeaders();
            Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8));
            Response.AddHeader("Content-Length", fileInfo.Length.ToString());
            Response.AddHeader("Content-Transfer-Encoding", "binary");

            Response.ContentType = filetype;
            Response.ContentEncoding = System.Text.Encoding.UTF8;
            Response.WriteFile(fileInfo.FullName);
           
            Response.Write("<script>window.close();</script>");
          
            Response.Flush();
            Response.End();
        }
        catch (Exception ex)
        {
            Response.Write(ex.ToString()); Response.Write("<script>window.close();</script>");
        }
        finally
        {
            Response.Write("<script>window.close();</script>");
        }


    }
谢谢啦

补充：.NET技术 ,  ASP.NET