// GET: Sales/Details/5
 public ActionResult Details(int?id)
 {
     if (id == null)
     {
         return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
     }
     try
     {
         var GetBill = Billing.GetBill(db, id).ToList();
         ViewBag.GetBill = GetBill;
         var model = Models.Billing.GetBill(db, id).FirstOrDefault();
         return(View(model));
     }
     catch (Exception ex)
     {
         ViewBag.Error = ex.Message;
     }
     return(View());
 }