必须指定所有键属性的映射 [英] Must specify mapping for all key properties

问题描述

您好，



我遇到了一个新问题，我一直在我的一个项目中使用实体框架。今天我遇到了sql的一个表，这个表是由很久以前从事该项目的人创建的。



该表没有主键列所以我决定添加1，然后我在我的解决方案中更新了EDMX文件，但它现在不断抛出此错误：



必须指定所有关键属性的映射。



我放弃了桌子并重新创建但是这个错误根本没有消失。



我真的很感激一些帮助这个。



谢谢。



我尝试了什么：



谷歌问题。



删除当前的EDMX并导入新的1.



重建/清理解决方案。

Hi There,

I am faced with a new issue, I have been using entity framework in one of my projects for quite sometime. Today I came across a table in sql that was created by someone who worked on the project a long time ago.

The table had no Primary Key column so I decided to add 1 in, I then updated the EDMX file in my solution but it now keeps throwing up this error:

Must specify mapping for all key properties.

I dropped the table and recreated but this error is not going away at all.

I would really appreciate some help on this.

Thanks.

What I have tried:

Google the issue.

Delete the current EDMX and import a new 1.

Rebuild/Clean the solution.

推荐答案

首先，你必须udpate（重新创建） .edmx 来自架构（数据库）的文件。

如何？在 EF Designer [ ^ ] - 右键单击​​ - > 从数据库更新模型。



如果不起作用，请按以下步骤操作：

手动编辑.edmx文件（实体框架） [ ^ ]

EDM - 必须指定实体集的所有关键属性的映射 [ ^ ]



祝您好运！

First of all, you have to udpate (recreate) .edmx file from schema (database).
How? In the EF Designer[^] - right-click -> Update Model from Database.

In case it won't help, please follow these:
Editing an .edmx File Manually (Entity Framework)[^]
EDM - Must specify mapping for all key properties of entity set[^]

Good luck!

从XML文件中删除关联因为它没有被删除/更新在数据库中删除/更新关联时自动启动。

Deleted association from the XML file since it was not being deleted/updated automatically when the association was deleted/updated in the database.

从模型浏览器中移除特定表..在model.store和实体中。

之后再添加相同的表..它将起作用

remove the particular table from model browser..in both model.store ande entity .
After that add again the same table..it will work

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