＆QUOT;定义此的EntityType关键＆QUOT。当包括类型ApplicationUser属性 [英] "Define the key for this EntityType." when including attribute of type ApplicationUser

问题描述

我在写C＃/ ASP.NET MVC5 Web应用程序，而我打下面的错误，当我尝试做一个新的迁移

  ToTheMoon.DAL.IdentityUserLogin：的EntityType'IdentityUserLogin没有定义键。定义此的EntityType的关键。
ToTheMoon.DAL.IdentityUserRole：的EntityType'IdentityUserRole没有定义键。定义此的EntityType的关键。
IdentityUserLogins：的EntityType：EntitySet的'IdentityUserLogins'是基于类型'IdentityUserLogin'不具有自定义键。
IdentityUserRoles：的EntityType：EntitySet的'IdentityUserRoles'是基于类型'IdentityUserRole'不具有自定义键。
 

我已经包含在我的模型中的一个类型 ApplicationUser 财产（？）。我认为，这是什么原因引起的：

公共ApplicationUser请求者{搞定;组; }


我非常清楚的事实是，在一般我应该明确标记某些与 [重点] 标注的关键，但我不相信这适用的错误消息所描述的是MVC5的电池包括登录系统的一部分课程。

我已经看到了一些有关这个错误所覆盖的方法（不记得它现在是什么人）所造成的，但我不这样做，让我在网上找到的其他所有问题都是对我没用

什么是AP preciated。

编辑：这里是我的情况下，它是pretty裸

。

公共类ApplicationDbContext：IdentityDbContext＆LT; ApplicationUser＆GT;
{
    公共ApplicationDbContext（）：基地（DefaultConnection）{}
}


解决方案

从问题的意见：

似乎增加了ApplicationUser请求者属性在不同的上下文中定义的实体。因为它是在不同的上下文这方面一无所知的所有实体身份的配置，因为这是成立由IdentityDbContext.OnModelCreating方法。

I'm writing C#/ASP.NET MVC5 web application, and I'm hitting the following errors when I try to do a new migration

ToTheMoon.DAL.IdentityUserLogin: : EntityType 'IdentityUserLogin' has no key defined. Define the key for this EntityType.
ToTheMoon.DAL.IdentityUserRole: : EntityType 'IdentityUserRole' has no key defined. Define the key for this EntityType.
IdentityUserLogins: EntityType: EntitySet 'IdentityUserLogins' is based on type 'IdentityUserLogin' that has no keys defined.
IdentityUserRoles: EntityType: EntitySet 'IdentityUserRoles' is based on type 'IdentityUserRole' that has no keys defined.

I have included a property(?) of type ApplicationUser in one of my models. I believe that this is what's causing it:

public ApplicationUser Requester { get; set; }

I am well aware of the fact that—in general—I should explicitly mark something as a key with the [Key] annotation, but I don't believe this applies as the error messages are describing classes that are part of MVC5's 'batteries included' login system.

I have seen something about this being caused by incorrectly overriding a method (can't remember what one it is now), but I'm not doing that, so all other questions that I've found online are useless to me.

Anything is appreciated.

EDIT: Here's my context, it's pretty bare.

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public ApplicationDbContext() : base("DefaultConnection") { }
}

解决方案

From the comments in the Question:

It appears the entity that added the ApplicationUser Requester property is defined in a different context. Because it is in a different context that context knows nothing about the configurations for all of the Identity entities, since that is set up by the IdentityDbContext.OnModelCreating method.

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