如何修复"在模型生成期间检测到一个或多个验证错误" - 错误

Question

在模型生成期间检测到一个或多个验证错误:

SportsStore.Domain.Concrete.shop_Products :: EntityType'shop __Products'没有定义键.定义此EntityType的键.

产品:EntityType:EntitySet'Products'基于类型'shop_Products',没有定义键.

 public ViewResult Index()
    {

        ProductsListViewModel viewModel = new ProductsListViewModel
        {
            Products = repository.Products
                .Where(p => p.CategoryId == 100)
                .OrderByDescending(p=>p.ProductID)
                .Take(5)
        };
        return View(viewModel);
    }


@foreach (var p in Model.Products)
{

<a href="">@p.ProductName</a>
}


public class shop_Products {
    public int ProductID { get; set; }
    public string ProductName { get; set; }
    public int CategoryId { get; set; }
    public Nullable<int> CategoryPropertyId { get; set; }
    public string PropertyValue { get; set; }
    public Nullable<int> ProductBrandId { get; set; }
    public Nullable<decimal> MarketPrice { get; set; }
    public decimal Price { get; set; }
    public Nullable<decimal> UserPrice { get; set; }
    public string TitleKeyword { get; set; }
    public string MetaKeyword { get; set; }
    public string MetaDescription { get; set; }
    public string PhotoName { get; set; }
    public string PhotoPath { get; set; }
    public string smallPhotos { get; set; }
    public string BigPhotos { get; set; }
    public string URL { get; set; }
    public double Discount { get; set; }
    public int Inventory { get; set; }
    public string ShortDesc { get; set; }
    public bool IsAccessories { get; set; }
    public bool IsGroup { get; set; }
    public bool IsTopService { get; set; }
    public string Accessorices { get; set; }
    public string PeopleGroup { get; set; }
    public string TopService { get; set; }
    public string Contents { get; set; }
    public string Parameter { get; set; }
    public string PackingList { get; set; }
    public string Service { get; set; }
    public string Professional { get; set; }
    public bool IsParameter { get; set; }
    public bool IsPackingList { get; set; }
    public bool IsService { get; set; }
    public bool IsProfessional { get; set; }
    public Nullable<bool> IsEnable { get; set; }
    public Nullable<bool> IsCommend { get; set; }
    public Nullable<bool> IsTop { get; set; }
    public Nullable<bool> IsBest { get; set; }
    public string ProductBrandType { get; set; }
    public string Manufacturer { get; set; }
    public string Makein { get; set; }
    public string weight { get; set; }
    public System.DateTime InputTime { get; set; }
    public Nullable<int> Sort { get; set; }
    public Nullable<int> SeeCount { get; set; }
}

我做了一些,并且运作良好.但这些都是错的.任何人都可以帮助我吗？

Answer 1

按照惯例,EF使用字段Id或[type name]Id主键.请参阅此处:http://msdn.microsoft.com/en-us/library/system.data.entity.modelconfiguration.conventions.idkeydiscoveryconvention%28v=vs.103%29.aspx

您的类型已命名shop_Products但您将键设置为ProductID(假设)的事实意味着它无法按惯例找到它.因此,您可以更改字段名称或类型名称,也可以添加[Key]上面的数据注释,ProductID如下所示:

[Key]
public int ProductID { get; set; }

Answer 2

将此命名空间参考添加System.ComponentModel.DataAnnotations到您的模型,然后在[Key]您的id属性上方添加注释