Entity framework 在运行EF 6迁移之前，是否可以将现有数据库放入单个用户中？

在迁移现有数据库之前，有没有办法将其置于单用户模式

我想做如下事情，尽管这不起作用：

        var connectionString = "";// Connection string pointing to MASTER database on server

        var sqlConnection = new SqlConnection();

        sqlConnection.Open();

        ExecuteNonQuery(
            sqlConnection,
            "USE MASTER");

        ExecuteNonQuery(
            sqlConnection,
            $"ALTER DATABASE [TargetDatabaseToMigrate] SET AUTO_UPDATE_STATISTICS_ASYNC OFF");

        ExecuteNonQuery(
            sqlConnection,
            $"ALTER DATABASE [TargetDatabaseToMigrate] SET SINGLE_USER WITH ROLLBACK IMMEDIATE");

        TargetDatabaseContext ctx = new TargetDatabaseContext(sqlConnection, false);
        if(!ctx.Database.CompatibleWithModel(true))
        {
            var migrator = new MigrateDatabaseToLatestVersion<TargetDatabaseContext, Migrations.Configuration>(true);
            migrator.InitializeDatabase(ctx);
        }

        ExecuteNonQuery(
            sqlConnection,
            $"ALTER DATABASE [TargetDatabaseToMigrate] SET MULTI_USER");

        ExecuteNonQuery(
            sqlConnection,
            $"ALTER DATABASE [TargetDatabaseToMigrate] SET AUTO_UPDATE_STATISTICS_ASYNC ON");

除此之外：

throw new InvalidOperationException(Strings.SqlProvider_CredentialsMissingForMasterConnection, e);

有没有办法做到这一点？多谢各位

throw new InvalidOperationException(Strings.SqlProvider_CredentialsMissingForMasterConnection, e);