Question

我想编写自己的迁移脚本。我的迁移课程：

using Microsoft.EntityFrameworkCore.Migrations;

namespace Foo.Migrations
{
    public class FooMigration : Migration
    {
        protected override void Up(MigrationBuilder migrationBuilder)
        {
          string script ="<some long script>"
            migrationBuilder.Sql(script);
        }
    }
}

但是当我运行Update-Database时，什么也没发生...

Answer 1

您需要通过将属性应用于迁移类来指定迁移所属的DbContext和迁移标识符，如下所示：

[DbContext(typeof(MyDbContext))]
[Migration("MyCustomMigration")]
public class FooMigration : Migration
{
    protected override void Up(MigrationBuilder migrationBuilder)
    {
        string script = "<some long script>";
        migrationBuilder.Sql(script);
    }
}

自定义书面迁移无法运行

1 个答案: