.net生成静态页

protected override void Render(HtmlTextWriter writer)
    {
        string filename = ""
           + DateTime.Now.Year
           + DateTime.Now.Month
           + DateTime.Now.Day
           + DateTime.Now.Hour
           + DateTime.Now.Minute
           + DateTime.Now.Second
           + DateTime.Now.Millisecond + ".htm";
        try
        {
            string newpath = Server.MapPath(".") + "\\" + filename;
            //string newpath = Server.MapPath("newfile") + "\\" + filename;
            FileStream fs = File.Create(newpath);
            fs.Close();
            //File.Create(Server.MapPath("newfile") + "\\" + filename);
            StreamWriter r = new StreamWriter(newpath, false, System.Text.Encoding.UTF8);
            HtmlTextWriter h = new HtmlTextWriter(r);
            base.Render(h);
            Response.Redirect(newpath);

            r.Close();
            h.Close();
        }
        catch (Exception error)
        {
            throw error;
        }
    }