C# 具有多对多未加载集合属性的实体

我有一个实体名册，有一个球员的集合

public class Roster
{
    public Roster()
    {
        Players = new List<Player>();
    }

    public int RosterId { get; set; }

    [MaxLength(100)]
    [Required]
    public string RosterName { get; set; }

    public ICollection<Player> Players { get; set; }
}
public class Player
{
    public int PlayerId { get; set; }
    [MaxLength(100)]
    [Required]
    public string PlayerName { get; set; }
    public virtual ICollection<Roster> Rosters { get; set; }
}

但是，当我检索花名册时，不会加载球员集合。我用所有正确的值验证了数据的存在性，并且下面的sql不会删除数据

SELECT * from Rosters r 
INNER JOIN RosterPlayers rp on r.RosterId = rp.RosterId
INNER JOIN Players p ON p.PlayerId = rp.PlayerId

---

我缺少什么？

将

玩家属性设置为虚拟，以便EF可以延迟加载收藏

public class Roster
{

    //...........

    public virtual ICollection<Player> Players { get; set; }
}

var rosters = db.Rosters.Include(r => r.Players).ToList();

啊！。。。你花了那么多时间去寻找，有时候最微不足道的问题就是被忽略了。谢谢
public class Roster
{

    //...........

    public virtual ICollection<Player> Players { get; set; }
}

var rosters = db.Rosters.Include(r => r.Players).ToList();