没有类型&#39; IEnumerable <selectlistitem> MVC的ViewData项

时间:2017-01-29 10:01:24

标签: asp.net-mvc entity-framework dropdownlistfor

我已经使用列表/编辑/删除功能完成了这个EF MVC应用程序(代码优先)。一切正常,但现在我需要添加两个下拉字段。产品具有需要编辑的类别和子类别。这就是我到目前为止所做的:

ProductSubcategoryID是外键的主类

public class Product
{
    public int ProductID { get; set; }
    public string Name { get; set; }
    public string ProductNumber { get; set; }
    public int? ProductSubcategoryID { get; set; }
    public IEnumerable<SelectList> SelectedCat = new List<SelectList> {};
    public IEnumerable<SelectList> SelectedSubCat = new List<SelectList> {};
}

public class ProductCategory
{
    public int ProductCategoryID { get; set; }
    public string Name { get; set; }
}

public class ProductSubcategory
{
    public int ProductSubcategoryID { get; set; }
    public int ProductCategoryID { get; set; }
    public string Name { get; set; }

}

在Product controller类中,我有:

public ActionResult Create()
{
    ViewBag.SubcatSelection = new SelectList(dbSubcat.ProductSubcategories, "ProductSubcategoryID", "Name"); ;
    return View();
}

并点击编辑:

@Html.LabelFor(model => model.ProductSubcategoryID)
@Html.DropDownListFor(model => model.SelectedSubCat, ViewBag.SubcatSelection as SelectList, "ProductSubcategoryID", "Name");

结果:

  

没有类型&#39; IEnumerable&lt; SelectListItem&gt;&#39;有钥匙&#39; SelectedSubCat&#39;。

0 个答案:

没有答案