Net Core 3.1 Entity Framework：获取所有不包含 属性 的记录

Question

在我的 Net Core 3.1 项目中，我有以下模型：

public class Team
{
    public int Id {get; set;
    public string TeamName { get; set; }

    public bool IsMainTeam { get; set; }

    // relation with AppUser, the owner of the team
    public string OwnerId { get; set; }
    public AppUser Owner { get; set; }

    // navigational planes for m2m with users
    public ICollection<TeamsAppUsers> Members { get; set; }

}


public class TeamsAppUsers
{
    public Guid AppUserId { get; set; }
    public AppUser Member { get; set; }

    public Guid TeamId { get; set; }
    public Team Team { get; set; }
}

public class AppUser
{
    public int Id{ get; set; }

    public Guid ExtendedAppUserId { get; set; }

    /// <summary>
    /// The relation to the user's extended profile.
    /// </summary>
    public ExtendedAppUser ExtendedProfile {get; set;}

    /// <summary>
    /// Collection of teams this user is a member of.
    /// </summary>
    public ICollection<TeamsAppUsers> TeamsAppusers { get; private set; }

}

我想编写一个查询，其中返回所有团队，其中提供的 userId 不是 OwnerId 且不在成员列表中（因此，TeamAppUsers 中的 AppUserId 不等于提供的 userId）。基本上，所有与用户无关的团队都应该返回...

我有这样的东西，但它不起作用：

var teams = await _context.Teams
    .Include(t => t.Owner)
    .Include(t => t.ExtendedTeamProfile)
    .Include(t => t.Members)
    .Where(t => t.Members.Any(m => m.AppUserId != userGuid) || t.OwnerId != userGuid)                    
    .ToListAsync();

成员过滤属性似乎是这里的问题，欢迎任何帮助！

编辑：显然，正如所指出的，||运算符应为 &&。关闭。

Answer 1

all the teams are returned where the provided userId is not the OwnerId and not in the list of members (emphasis mine)

然而在您的代码中您使用了 ||（即，或）。你不想要这样的东西吗：

var teams = await _context.Teams
    .Include(t => t.Owner)
    .Include(t => t.ExtendedTeamProfile)
    .Where(t => !t.Members.Any(m => m.AppUserId == userGuid) && t.OwnerId != userGuid)                    
    .ToListAsync();

TLDR：一大堆布尔否定问题。