public NounDeclensionControl()
        {
            InitializeComponent();

              if (!DesignerProperties.GetIsInDesignMode(this))
              {
            _databaseManager = new DatabaseManager();

            ResetWithNewNoun();
              }
        }
        public PersonalPronounVocabControl()
        {
            InitializeComponent();

              if (!DesignerProperties.GetIsInDesignMode(this))
              {
            _databaseManager = new DatabaseManager();

            ResetWithNewPersonalPronoun();
              }
        }
        public VerbConjugationControl()
        {
            InitializeComponent();

              if (!DesignerProperties.GetIsInDesignMode(this))
              {
            _databaseManager = new DatabaseManager();

            ResetWithNewVerb();
              }
        }
        public VocabControl()
        {
            InitializeComponent();

              if (!DesignerProperties.GetIsInDesignMode(this))
              {
            _databaseManager = new DatabaseManager();

            StudyGroupComboBox.ItemsSource = _databaseManager.GetVocabStudyGroups();
            StudyGroupComboBox.DisplayMemberPath = "GroupName";
            StudyGroupComboBox.SelectedIndex = 0;

            ResetWithNewVocab();
              }
        }