我们必须显式地添加到数据库上下文吗?

public class Practice
{
    public List<Participation> Participation { get; set; }
}

public class Participation
{
    public string Id { get; set; }
    public virtual Practice Practice { get; set; }
}

public void test()
{
    var practice = _ctx.Practice.SingleOrDefault(p => p.Id == practiceId);
    practice.Participations.AddRange(NewParticipations);
    _ctx.Participation.AddRange(NewParticipations)
    await _ctx.SaveChangesAsync();
}

如果我有上述内容,我需要测试函数中的第三行来保存新的参与,还是practice.participations.addrange()隐式处理?