这是命令的重新或降的数据库时,使用实体框架迁移,不可以 初始值
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Which is the command to recreate or drop the database when using Entity Framework Migrations, not Initializers
?
我应该写在包管理器控制台
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注释
我在找一些命令,让我相同的功能 Database.SetInitializer<>(新DropCreateDatabaseIfModelChanges<>());
但与迁移的办法。
I'm looking for some command that gives me the same functionality as Database.SetInitializer<>(new DropCreateDatabaseIfModelChanges<>());
but with the migrations approach.
推荐答案
您可以通过使用自动迁移获得与迁移相同的行为。
You can get the same behavior with Migrations by using automatic migrations.
PM> enable-migrations -EnableAutomaticMigrations
在Configuration.cs在构造函数中,确保自动迁移,并允许数据丢失都设置为true ...
In Configuration.cs in the constructor, make sure automatic migrations and allow data loss are set to true...
public Configuration()
{
AutomaticMigrationsEnabled = true;
AutomaticMigrationDataLossAllowed = true;
}
现在,每当你的模式的转变,只是执行更新数据库...
Now whenever your model changes, just execute update-database...
PM> update-database
该模式将被改变以匹配模型和表中的任何现有数据将在那里逗留(除非它是一个重命名或删除列)。该种方法被运行后,对数据库进行更新,因此您可以进一步控制在有任何改变的数据。
The schema will be changed to match the models and any existing data in the tables will stay there (unless it's in a renamed or removed column). The Seed method is run after the database is updated so you can further control any changes to the data in there.
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