IEnumerable<;选择列表项>;未绑定到枚举

本文关键字:绑定 gt 枚举 列表 lt 选择 IEnumerable | 更新日期: 2023-09-27 18:23:47

我正在尝试使用enum作为DropDownList的文本和值的来源。不幸的是,它没有按预期工作-DropDownList已经填充,但没有选择任何选项
这是枚举:

public enum OrderLineState
        {
            Draft = 0,
            InProcess = 1,
            Done = 2
        }

以下是我如何从枚举填充DropDown:

    public IEnumerable<Helper.OrderLineStateData> GetOrderLineStates()
        {
            return from Enums.OrderLineState s in Enum.GetValues(typeof(Enums.OrderLineState))
                   select new Helper.OrderLineStateData() { OrderLineStateId = (int)s, OrderLineStateName = s.ToString() };
        }

这是控制器:

        [Authorize]
        public async Task<ActionResult> EditOrderLine(int id)
        {
            ViewBag.OrderLineStates = new SelectList(_olr.GetOrderLineStates(), "OrderLineStateId", "OrderLineStateName");
            var result = await _olr.GetAllOrderLines(id);
            return PartialView(result);
        }

最后-Razor视图:

<td>
      @Html.DropDownListFor(x => item.LineState, (IEnumerable<SelectListItem>)ViewBag.OrderLineStates, new { @class = "form-control" })
</td>

IEnumerable<;选择列表项>;未绑定到枚举

如果您是MVC 5,则有一个枚举帮助程序。试试这个:

public enum OrderLineState
{
    [Display(Name = "Draft")]
    Draft = 0,
    [Display(Name = "In Process")]
    InProcess = 1,
    [Display(Name = "Done")]
    Done = 2
}

然后

@Html.EnumDropDownListFor(model => model.LineState)

http://www.drdobbs.com/windows/aspnet-mvc-51/240168353