public void Delete(Domain.MMerk merk)
 {
     _merkRepository.DbContext.BeginTransaction();
     _merkRepository.Delete(merk);
     _merkRepository.DbContext.CommitTransaction();
 }
 public void Insert(Domain.MMerk merk)
 {
     _merkRepository.DbContext.BeginTransaction();
     _merkRepository.Save(merk);
     _merkRepository.DbContext.CommitTransaction();
 }