[C＃Linq嵌套查询中的联合集合

Posted 2021-04-04

我想在Linq中表达此摘要，但我无法全神贯注。 _gameTableEntries本质上是具有字段long tableId和ICollection<object> connectedClients的元组

private ICollection<GameTableEntry> _gameTableEntries = new (...);

public ICollection<ConnectionHandler> GetConnectedClients(long tableId)
{
    HashSet<ConnectionHandler> set = new HashSet<ConnectionHandler>();

    foreach (var tableEntry in _gameTableEntries)
    {
        if (!tableEntry.TableId.Equals(tableId)) continue;

        foreach (var handler in tableEntry.ConnectedClients)
        {
            if (!handler.IsConnected) continue;

            set.Add(handler);
        }
    }

    return set;
}

答案

您可能会用SelectMany进行类似的操作