EF LINQ选择Id在List中的实体

Question

我试图选择使用EF和Linq的实体列表，我应该仅检索参与者ICollection中具有特定AccountId的实体

public class Conversation
{
    public Conversation()
    {
        Participants = new List<Account>();
        Messages = new List<Message>();
    }

    [Key]
    public Int32 conversationId { get; set; }
    public ICollection<Message> Messages { get; set; }
    public ICollection<Account> Participants { get; set; }
}

_Db是DbContext

public async Task<List<Conversation>> FindByAccountIdAsync(Int32 id)
{
   return await _Db.Conversations.Where(....).ToListAsync(); 
   // .... select conversations where id == AccountId inside ICollection<Account> Participants
}

我不知道如何在LINQ中编写查询

Answer 1

使用Any：

return await _Db.Conversations
    .Where(c => c.Participants.Any(p => p.Id == id))
    .AsQueryable()
    .ToListAsync();