public void UpdateAsignment(Asignment asignment)
 {
     repositoryWrapper.AsignmentRepository.Update(asignment);
 }
 public void DeleteAsignment(Asignment asignment)
 {
     repositoryWrapper.AsignmentRepository.Delete(asignment);
 }
 public void AddAsignment(Asignment asignment)
 {
     repositoryWrapper.AsignmentRepository.Create(asignment);
 }