เมื่อฉันรันPM> Remove-Migration -context BloggingContext
ใน VS2015 ด้วยโครงการ ASP.NET Core โดยใช้ EF Core ฉันได้รับข้อผิดพลาดดังต่อไปนี้:
System.InvalidOperationException: The migration '20160703192724_MyFirstMigration' has already been applied to the database. Unapply it and try again. If the migration has been applied to other databases, consider reverting its changes using a new migration. at Microsoft.EntityFrameworkCore.Migrations.Design.MigrationsScaffolder.RemoveMigration(String projectDir, String rootNamespace, Boolean force)
at Microsoft.EntityFrameworkCore.Design.MigrationsOperations.RemoveMigration(String contextType, Boolean force)
at Microsoft.EntityFrameworkCore.Tools.Cli.MigrationsRemoveCommand.<>c__DisplayClass0_0.<Configure>b__0()
at Microsoft.Extensions.CommandLineUtils.CommandLineApplication.Execute(String[] args)
at Microsoft.EntityFrameworkCore.Tools.Cli.Program.Main(String[] args)
The migration '20160703192724_MyFirstMigration' has already been applied to the database. Unapply it and try again. If the migration has been applied to other databases, consider reverting its changes using a new migration.
ฉันจะยกเลิกการสมัครได้อย่างไร ฉันใช้ ASP.NET Core 1.0 รุ่นล่าสุด, EF Core และ VS2015 Update 3
-force
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