public HttpResponseMessage ApproveProduct(int productid, string productname, string retailername, string retaileremail)
        {
            entities.proc_Approve_Product(productid);
            string from    = "*****@*****.**";
            string subject = "";
            string body    = "Hello " + retailername +
                             ", shopping gladiator Approved your Product" + productname + "changes will be reflected in the app";
            SmtpClient  smtp = new SmtpClient();
            MailMessage mm   = new MailMessage();

            mm.From = new MailAddress(from);
            mm.To.Add(retaileremail);
            mm.Subject = subject;
            mm.Body    = body;
            smtp.Send(mm);
            return(Request.CreateResponse(HttpStatusCode.OK, "success"));
        }