c# - 选择子句为空

Question

我正在使用

your = from p in (toSelect)
select new
{
  last = p.Last,
  current = p.CurrentPlayer,
  seats = from s in (p.Seated)
  select new
  {
      UID = s.UID,
      buyin = s.BuyIn
  }
}

p.Seated 是一个数组，每次 s.UID 未设置时如何传递 null？我知道“where”，但我想知道哪些座位是免费的(例如 null)

希望这已经足够清楚了。

Answer 1

你可以试试这个:

your = from p in (toSelect)
select new
{
  last = p.Last,
  current = p.CurrentPlayer,
  seats = p.Seated.Select(s => s.UID != null
    ? new
      {
          UID = s.UID,
          buyin = s.BuyIn
      }
    : null;
}