一、src下面增加DbMigrations类库，注意是要.Net Framework 类型的类库，不能是.Net Standard 的。
二、添加类库后为项目添加如上三个项目
appsetting.json 配置信息
{"ConnectionStrings": {"AidenAdmin": "Server=127.0.0.1;port=3306;Database=AidenAdmin;User=root; Password=root"}}
DbM_AidenAdminDbContext 上下文
namespace AidenAdmin.DbMigrations {[ConnectionStringName(AidenAdminDbProperties.ConnectionStringName)]public class DbM_AidenAdminDbContext : AidenAdminDbContext{public DbM_AidenAdminDbContext(DbContextOptions<AidenAdminDbContext> options): base(options){}protected override void OnModelCreating(ModelBuilder builder){base.OnModelCreating(builder);}} }
AidenAdminDbMigrationsContextFactory 上下文初始化文件
public class AidenAdminDbMigrationsContextFactory : IDesignTimeDbContextFactory<DbM_AidenAdminDbContext>{public DbM_AidenAdminDbContext CreateDbContext(string[] args){var configuration = BuildConfiguration();var builder = new DbContextOptionsBuilder<AidenAdminDbContext>().UseMySql(ServerVersion.AutoDetect("AidenAdmin"));return new DbM_AidenAdminDbContext(builder.Options);}private static IConfigurationRoot BuildConfiguration(){var builder = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory()).AddJsonFile("appsettings.json", optional: false);return builder.Build();}}
