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如何使用实体框架代码
原标题:How to use Entity Framework code-first

我设立了一些班级,并配置了连接线。

But still got an error:

Unhandled Exception: System.NotSupportedException: Model compatibility cannot be checked because the database does not contain model metadata. Model compatibility can only be checked for databases created using Code First or Code First Migrations.

最佳回答

i fixed it by Run the ‘Enable-Migrations’ command in Package Manager Console.

问题回答
  1. Check the EF version you have, latest is 4.3.1.
  2. You also need to configure a DbContext class. check this: http://msdn.microsoft.com/en-us/data/gg685467

如果你通过删除数据库和从零打中恢复数据库,那么对我来说,就是什么。

第一,由包裹管理人掌管以下指挥。

  • 页: 1

  • 页: 1

其次,删除贵项目数据夹中的红.和软.文档。

在这方面至关重要。 通常,你将管理更新数据库。 如果你这样做,该例外将仍然被推翻。

DO NOT 最新数据库。 INSTEAD直接管理项目代码。 欧洲复兴开发银行将重建数据库。

这些步骤对我有利。 让我知道这是否有助于你。





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