你如何在asp.net mvc中提交下拉列表

public class DropDownModel
{
    public string SelectedOption { get; set; }
    public List<SelectListItem> Options { get; set; }
}

public ActionResult Index()
{
    var model = new DropDownModel();
    model.Options = new List<SelectListItem>
    {
        new SelectListItem { Text = "Option 1", Value = "1" },
        new SelectListItem { Text = "Option 2", Value = "2" },
        new SelectListItem { Text = "Option 3", Value = "3" }
    };
    return View(model);
}

@model DropDownModel

@Html.DropDownListFor(m => m.SelectedOption, Model.Options, "Select an option", new { id = "myDropDown" })

@section Scripts {
   <script>
        $(document).ready(function () {
            $("#myDropDown").on("change", function () {
                $("form").submit();
            });
        });
    </script>
}

[HttpPost]
public ActionResult Index(DropDownModel model)
{
    // Process the selected option
    string selectedOption = model.SelectedOption;

    // Do something with the selected option

    // Redirect or return a view as needed
    return RedirectToAction("Index");
}