public RentedCar GetById(int id)
 {
     try
     {
         using (var r = new RentedCarRepository())
         {
             var car = r.GetById(id);
             return(car);
         }
     }
     catch (Exception ex)
     {
         Console.WriteLine(ex);
         return(null);
     }
 }
 public IList <RentedCar> GetAll()
 {
     try
     {
         using (var r = new RentedCarRepository())
         {
             var tempList = r.GetAll();
             return(tempList.ToList());
         }
     }
     catch (Exception ex)
     {
         Console.WriteLine(ex);
         return(null);
     }
 }
 public bool Insert(RentedCar rentedCar)
 {
     try
     {
         using (var r = new RentedCarRepository())
         {
             r.Insert(rentedCar);
             r.Save();
             return(true);
         }
     }
     catch (Exception ex)
     {
         Console.WriteLine(ex);
         return(false);
     }
 }