How do you configure the DbContext when creating Migrations in Entity Framework Core?

Question

Is there way that dependency injection can be configured/bootstrapped when using Entity Framework\'s migration commands?

Entity Framework Core supports dependency in

Answer 1

In .NET Core since version 2.1 should be used IDesignTimeDbContextFactory because IDbContextFactory is obsolete.

public class FooDbContextFactory : IDesignTimeDbContextFactory
{
    public FooDbContext CreateDbContext(string[] args)
    {
        IConfigurationRoot configuration = new ConfigurationBuilder()
            .SetBasePath(Directory.GetCurrentDirectory())
            .AddJsonFile("appsettings.json")
            .Build();

        var builder = new DbContextOptionsBuilder();
        var connectionString = configuration.GetConnectionString("ConnectionStringName");
        builder.UseSqlServer(connectionString);

        return new FooDbContext(builder.Options);
    }
}