How To Upload Multiple Images In to DataBase

if (imgFileUpload.HasFile)
            {
                HttpFileCollection hfc = Request.Files;

                if (hfc.Count > 0)
                {
                    for (int i = 0; i < hfc.Count; i++)
                    {
                        HttpPostedFile hpf = hfc[i];
                        if (hpf.ContentLength > 0)
                        {

                            string ext = System.IO.Path.GetExtension(hpf.FileName);
                            if (ext == ".jpg" || ext == ".bmp" || ext == ".gif" || ext== ".pdf" || ext == ".doc" || ext == ".docx")
                            {

                                buffer = new byte[hpf.ContentLength];

                                float bytes = hpf.InputStream.Read(buffer, 0, (int)hpf.ContentLength);
                                float size = bytes / 1024;
                                string s = @"~\images\galleryTestImages\" +hpf.FileName;
                                hpf.SaveAs(Server.MapPath(s));
                                string s1="insert into RW_GallerysImage values("+Convert.ToInt32(Session["Sno"].ToString())+",'"+s.ToString()+"')";
                                SqlCommand cmd = new SqlCommand(s1,con);
                                //cmd.CommandType = CommandType.StoredProcedure;
                                //SqlParameter p1 = new SqlParameter("@pImagePath",SqlDbType.VarChar);
                                //p1.Value = s.ToString();
                                //cmd.Parameters.Add(p1);

                                //p1 = new SqlParameter("@pTitleService",SqlDbType.VarChar);
                                //p1.Value = txtTitle.Text;
                                //cmd.Parameters.Add(p1);
                                con.Open();
                                cmd.ExecuteNonQuery();
                                //cmd2.ExecuteNonQuery();

                                lblstatus.Text = "<script>" + Environment.NewLine +"alert('Advertisment Posted Successfully')</script>";
                                GetServiceName();
                                con.Close();
                                panel2.Visible = true;
                                panel1.Visible = false;
                                txtTitle.Text = "";
                               
                            }
                        }
                    }

                }
            }