实体框架CTP 5 RelatedTo属性不起作用 [英] Entity Framework CTP 5 RelatedTo Attribute not working

问题描述

使用Entity Framework CTP 5，我试图在我的课程中列出一个外键列表. 但是我不断收到一条错误消息，提示找不到相关的收件人."

Using Entity Framework CTP 5 I am trying to make a list of foreign keys in my class. But I keep getting an error which says RelatedTo can not be found.

这是代码:

public class VertragsVerweis : GenericBLL
{
    [Key]
    public String Uid
    {   
        get;
        set;
    }

    public String VertagsVerweisNr
    {
        get;
        set;
    }

    public String Bezeichnung
    {
        get;
        set;
    }

    public Boolean Reparatur
    {
        get;
        set;
    }

    [RelatedTo(RelatedProperty="Artikel")]
    public List<Artikel> Artikelen
    {
        get;
        set;
    }
}

这给了我错误:

错误2找不到类型或名称空间名称"RelatedTo"(是否缺少using指令或程序集引用?)C:\ Documents and Settings \ wep \ Bureaublad \ WEPProject \ branches \ codefirst Entity Framework \ BusinessLogic \ BusinessLogic \ VertragsVerweisBLL.cs 37 10 BusinessLogic

Error 2 The type or namespace name 'RelatedTo' could not be found (are you missing a using directive or an assembly reference?) C:\Documents and Settings\wep\Bureaublad\WEPProject\branches\codefirst Entity Framework\BusinessLogic\BusinessLogic\VertragsVerweisBLL.cs 37 10 BusinessLogic

由于某种原因，它确实从System.ComponentModel.DataAnnotations中识别键属性.为什么它不识别RelatedTo?

For some reason it DOES recognize the Key Attribute from System.ComponentModel.DataAnnotations. Why does it not recognize RelatedTo?

推荐答案

我建议您升级到EF4.1 ...也许可以解决您的问题.如果不是，请更新您的问题:)

I would recommend you upgrade to EF4.1 ... Perhaps your problem is solved with that. If not - update your question :)

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