下载仅包含答案的内容

Question

我有一个加载响应的方法，但是它可以加载所有内容，甚至是空的文本框， 而我恰恰需要那些只有内容的人

 private void LoadAnswers()
    {
        var currentQuestion = _bsQuestions.Current as Question;
        var bs = new BindingSource();
        bs.DataSource = currentQuestion.Answers;

        UserControl uc = new UserControl();
        if (currentQuestion.Type == QuestionType.SingleSelect )
        {
            uc = new UserControlSingle(bs);
            label4.Text = $"select 1 of { bs.Count} the answers";
        }
        else
        {
            uc = new UserControlMulti(bs);
            label4.Text = $"select several of { bs.Count} the answers";
        }
        _panel.Controls.Clear();
        _panel.Controls.Add(uc);
    }

UserControlMulti

 public partial class UserControlMulti : UserControl
{
    private readonly BindingSource _bs;

    public UserControlMulti(BindingSource bindingSource)
    {
        InitializeComponent();

        _bs = bindingSource ?? throw new ArgumentNullException(nameof(bindingSource));
        SetBindings();
    }

    private void SetBindings()
    {
        for (int i = 0; i < _bs.Count; i++)
        {
            //textboxes
            var textBox = _panelMulti.Controls
                .OfType<TextBox>().First(t => t.Name.EndsWith((i + 1).ToString()));
            textBox.DataBindings.Add("Text", _bs[i],
           nameof(Answer.Value), true, DataSourceUpdateMode.OnPropertyChanged);

            //checkboxes

            var checkbox = _panelMulti.Controls
                .OfType<CheckBox>().First(t => t.Name.EndsWith((i + 1).ToString()));
            checkbox.DataBindings.Add("Checked", _bs[i], nameof(Answer.IsCorrect));


        }
    }
}

UserControlSingle完全相同

简而言之，我需要加载所有文本框，除了空白处，如何加载复选框，该复选框应与数字中的文本框相同