public ActionResult InsertClient(ServiceReference1.Client client)
        {
            if (Session["userToken"] == null)
            {
                return(RedirectToAction("Login"));
            }

            if (string.IsNullOrEmpty(client.address) ||
                string.IsNullOrEmpty(client.firstname) ||
                string.IsNullOrEmpty(client.lastname) ||
                string.IsNullOrEmpty(client.phone)
                )
            {
                ViewBag.ErrorMessage = "Please provide all required information to add a new client.";
                return(RedirectToAction("Index"));
            }
            try
            {
                serviceRef.InsertClient(Session["userToken"].ToString(), client);
            }
            catch (Exception ex)
            {
                ViewBag.ErrorMessage = ex.Message;
            }

            return(RedirectToAction("Index"));
        }