如何使用MVC @html helper将选择列表中的多个选择输入到同一DB行/列

@model YourProject.Models.YourViewModel

@using (Html.BeginForm("SaveSelections", "YourController", FormMethod.Post))
{
    @Html.DropDownListFor(m => m.SelectedOptions, Model.Options, new { multiple = "multiple" })
    <input type="submit" value="Save" />
}

[HttpPost]
public ActionResult SaveSelections(YourViewModel model)
{
    // 获取选择列表的值
    var selectedOptions = model.SelectedOptions;

    // 将选择列表的值保存到数据库中的相应行/列
    // 这里假设使用Entity Framework进行数据库操作
    using (var dbContext = new YourDbContext())
    {
        var entity = dbContext.YourEntity.Find(model.Id);
        entity.SelectedOptions = selectedOptions;
        dbContext.SaveChanges();
    }

    return RedirectToAction("Index");
}

public class YourViewModel
{
    public int Id { get; set; }
    public List<SelectListItem> Options { get; set; }
    public List<string> SelectedOptions { get; set; }
}