filename from database in fileupload control

protected void upload(object sender, EventArgs e)

    {

        HttpFileCollection files = Request.Files;

        for (int i = 0; i < files.Count; i++)

        {

            HttpPostedFile file = files[i];

            string filename = file.FileName;

            string path = Server.MapPath("~/");

            file.SaveAs(path + filename);

            Response.Write("file " + filename + " uploaded<br/>");

        }

    }