MigrationBuilder.AlterDatabase 方法

定义

命名空间:

Microsoft.EntityFrameworkCore.Migrations

程序集:

Microsoft.EntityFrameworkCore.Relational.dll

包:

Microsoft.EntityFrameworkCore.Relational v9.0.0

重载

AlterDatabase(String, String)

生成 以 AlterDatabaseOperation 更改现有数据库。

AlterDatabase(String, String)

Source:

MigrationBuilder.cs

生成 以 AlterDatabaseOperation 更改现有数据库。

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.AlterOperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AlterDatabaseOperation> AlterDatabase (string? collation = default, string? oldCollation = default);

abstract member AlterDatabase : string * string -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.AlterOperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AlterDatabaseOperation>
override this.AlterDatabase : string * string -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.AlterOperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AlterDatabaseOperation>

Public Overridable Function AlterDatabase (Optional collation As String = Nothing, Optional oldCollation As String = Nothing) As AlterOperationBuilder(Of AlterDatabaseOperation)

参数

collation

String

要应用于列的排序规则。

oldCollation

String

要应用于列的上一排序规则。

返回

AlterOperationBuilder<AlterDatabaseOperation>

一个生成器，允许将批注添加到操作中。

注解

有关详细信息和示例 ，请参阅数据库迁移 。