public bool DeleteDvd(int dvdId)
 {
     try
     {
         Dvd dvd = GetDvd(dvdId);
         using (var ctx = new DvdContext())
         {
             ctx.Entry(dvd).State = System.Data.Entity.EntityState.Deleted;
             ctx.SaveChanges();
         }
         return(true);
     }
     catch (Exception e)
     {
         return(false);
     }
 }
 public bool UpdateDvd(Dvd dvd)
 {
     try
     {
         using (var ctx = new DvdContext())
         {
             //dvd.Director = DirectorRepositoryEF.GetDirectorbyId(dvd.DirectorId);
             //dvd.Rating = RateRepositoryEF.GetRatebyId(dvd.RatingId);
             ctx.Entry(dvd).State = System.Data.Entity.EntityState.Modified;
             ctx.SaveChanges();
             dvd.Director = DirectorFactory.Create().GetDirectorbyId(dvd.DirectorId);
             dvd.Rating   = RatingFactory.Create().GetRatingbyId(dvd.RatingId);
             return(true);
         }
     }
     catch (Exception e)
     {
         return(false);
     }
 }