linq - 如何在 Linq 中订购组结果？

Question

我有以下 linq 查询，效果很好。我不确定如何对分组结果进行排序。

from a in Audits
join u in Users on a.UserId equals u.UserId
group a by a.UserId into g
select new { UserId = g.Key, Score = g.Sum(x => x.Score) }

结果当前按 UserId 升序排序。我追求分数下降。

谢谢:)

Answer 1

只需添加 orderby 子句;-)

from a in Audits
join u in Users on a.UserId equals u.UserId
group a by a.UserId into g
let score = g.Sum(x => x.Score)
orderby score descending
select new { UserId = g.Key, Score = score };