public int Add_PassengersDAL(Passenger p)
 {
     try
     {
         using (var orr = new Online_Railway_reservation_systemEntities())
         {
             orr.Configuration.ProxyCreationEnabled = false;
             orr.Add_Passengers(p.PNR,p.Passenger_Name,p.Date_Of_Birth,p.Card_Code,p.Gender,p.Email,p.Phone_Number,p.Address);
             return 1;
         }
     }
     catch (Exception)
     {
         return 0;
     }
 }