The model backing the 'StudentDbContext' context has changed since the database was created. Consider using Code First Migrations to update the database(http://go.microsoft.com/fwlink/?LinkId=238269). 解决方法:思路是按照提示 进行EF Code First数据库迁移。 先在出错的数据库上下文中添加如下代码: ...
Code First Migrations更新数据库结构的具体步骤 一、打开程序包管理器控制台 当你的实体模型与数据库架构不一致时,引发以下错误: The model backingthe 'SchoolContext' context has changed since the database was created.Consider using Code First Migrations to update the database (http://go.microsoft.com/...
Consider using Code First Migrations to update the database ( http://go.microsoft.com/fwlink/?LinkId=238269).As the exception suggests, it’s time to start using Code First Migrations. The first step is to enable migrations for our context....
使用Code First Migrations依据代码更新数据库结构Jenni Konrad
The model backingthe 'SchoolContext' context has changed since the database was created.Consider using Code First Migrations to update the database (http://Go.microsoft.com/fwlink/?LinkId=238269) 百度搜索Code First Migrations,都说要执行命令 Update-Database ,在哪执行呢?继续找呀找,VS.Net的“程...
The model backingthe 'SchoolContext' context has changed since the database was created.Consider using Code First Migrations to update the database (http://go.microsoft.com/fwlink/?LinkId=238269) 百度搜索Code First Migrations,都说要执行命令 Update-Database ,在哪执行呢?继续找呀找,的“程序包管...
If you were to run the application again you would get an InvalidOperationException statingThe model backing the 'BlogContext' context has changed since the database was created. Consider using Code First Migrations to update the database (http://go.microsoft.com/fwlink/?LinkId=238269). ...
If you were to run the application again you would get an InvalidOperationException statingThe model backing the 'BlogContext' context has changed since the database was created. Consider using Code First Migrations to update the database (http://go.microsoft.com/fwlink/?LinkId=238269). ...
考虑使用Code First Migrations来更新数据库EN在本节中，您将使用Entity Framework Code First来实现模型类...
此命令将在解决方案中创建一个名为 Migrations 的文件夹,并在其中放置一个名为 Configuration 的类。 Configuration 类是你配置应用程序迁移的位置,有关此类的详细信息,请参阅Code First 迁移主题。 步骤3:添加初始迁移 创建迁移并应用到本地数据库后,你可能还想要将这些更改应用于其他数据库。 例如,你的本地数据...