如何创建在ASP.NET EF中增长的动态下拉框？

// 实体类
public class Option
{
    public int Id { get; set; }
    public string Value { get; set; }
    public string Text { get; set; }
}

// 数据访问层
public class OptionRepository
{
    private readonly YourDbContext _context;

    public OptionRepository(YourDbContext context)
    {
        _context = context;
    }

    public List<Option> GetOptions()
    {
        return _context.Options.ToList();
    }
}

// 控制器
public class YourController : Controller
{
    private readonly OptionRepository _optionRepository;

    public YourController(OptionRepository optionRepository)
    {
        _optionRepository = optionRepository;
    }

    public IActionResult Index()
    {
        var options = _optionRepository.GetOptions();
        return View(options);
    }
}

// 视图
@model List<Option>

<select id="dynamicDropdown">
    @foreach (var option in Model)
    {
        <option value="@option.Value">@option.Text</option>
    }
</select>

<script>
    $(document).ready(function () {
        $('#dynamicDropdown').change(function () {
            var selectedValue = $(this).val();
            $.ajax({
                url: '/YourController/GetOptions',
                type: 'GET',
                data: { selectedValue: selectedValue },
                success: function (data) {
                    // 更新下拉框的选项数据
                    // ...
                }
            });
        });
    });
</script>