没有类型为“ IEnumerable”的ViewData项 <SelectListItem> 具有关键的“分支”

Question

我正在尝试做dropdownlist，它正在工作，可以从数据库中获取数据，但是出现以下错误，任何人都可以帮助我解决此问题。

没有类型为“ IEnumerable”的ViewData项目具有键“ branche”。

.Net MVC 5

我的控制器

    public ActionResult Create()
    {
        //sysEntities1 db = new sysEntities1();
        //ViewBag.branches = new SelectList(db.branche, "brancheID", "brancheName");



        sysEntities1 db1 = new sysEntities1();

        IEnumerable<SelectListItem> branches = db.branche.Select(
            b => new SelectListItem { Value = b.brancheName, Text = b.brancheName });
        ViewData["brancheName"] = branches;


        return View();
    }

我的观点

@ Html.DropDownList（“ branche”，（IEnumerable）ViewBag.branches，“ Select Branch”，new {htmlAttributes = new {@class =“ form-control”}}）

Answer 1

尝试使用以下提及的代码。

@Html.DropDownList("branche", (SelectList)ViewData["brancheName"], "Select Branch", new { htmlAttributes = new { @class = "form-control" } })

要么

@Html.DropDownList("branche", (SelectList)ViewBag.branches, "Select Branch" , new { htmlAttributes = new { @class = "form-control" } })

Answer 2

尝试检查下面提到的代码，我已经使用过。

public IEnumerable<DropDownDTO> GetCity()
    {
        IEnumerable<DropDownDTO> objDropDown;

        using (var context = new AKJIEntities())
        {
            objDropDown = (from x in context.CityMasters
                           where x.IsDeleted == false && x.Status == true
                           orderby x.City
                           select new DropDownDTO
                           {
                               Value = x.CityID,
                               Text = x.City
                           }).AsParallel().ToList();

            return objDropDown;
        }
    }

ViewBag.CityList = new SelectList(GetCity(), "Value", "Text");

@Html.DropDownList("CityId", (SelectList)ViewBag.CityList, "Select City", new { @class = "dropdown_list" })

希望这对您有所帮助。