public MCost Delete(Domain.MCost cost)
 {
     _costRepository.DbContext.BeginTransaction();
     _costRepository.Delete(cost);
     _costRepository.DbContext.CommitTransaction();
     return(cost);
 }
 public MCost Insert(Domain.MCost cost)
 {
     _costRepository.DbContext.BeginTransaction();
     _costRepository.Save(cost);
     _costRepository.DbContext.CommitTransaction();
     return(cost);
 }