private void SelectClassification(int classificationId)
        {
            _classification = Models.Classification
                              .CreateClassification(_sqlClient.FindClassification(classificationId));

            ClassificationTypeComboBox.Text = _classification.Type;
            ConceptsRootTextBox.Text        = GetConceptName(_classification.ConceptRootId);
            ClassificationBaseTextBox.Text  = _classification.Base;
        }