AlterOperationBuilder<TOperation>.OldAnnotation(String, Object) 方法

定义

命名空间:

Microsoft.EntityFrameworkCore.Migrations.Operations.Builders

程序集:

Microsoft.EntityFrameworkCore.Relational.dll

包:

Microsoft.EntityFrameworkCore.Relational v9.0.0

Source:

AlterOperationBuilder.cs

使用给定的名称/值对批注 MigrationOperation 作为更改之前存在的批注。

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.AlterOperationBuilder<TOperation> OldAnnotation (string name, object? value);

abstract member OldAnnotation : string * obj -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.AlterOperationBuilder<'Operation (requires 'Operation :> Microsoft.EntityFrameworkCore.Migrations.Operations.MigrationOperation and 'Operation :> Microsoft.EntityFrameworkCore.Migrations.Operations.IAlterMigrationOperation)>
override this.OldAnnotation : string * obj -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.AlterOperationBuilder<'Operation (requires 'Operation :> Microsoft.EntityFrameworkCore.Migrations.Operations.MigrationOperation and 'Operation :> Microsoft.EntityFrameworkCore.Migrations.Operations.IAlterMigrationOperation)>

Public Overridable Function OldAnnotation (name As String, value As Object) As AlterOperationBuilder(Of TOperation)

参数

name

String

批注名称。

value

Object

批注值。

返回

AlterOperationBuilder<TOperation>

同一生成器，以便可以链接多个调用。