select linq 中 sql 的一些 ID

Question

嗨，我正在使用下面的查询 select table1 中的 studentId 和 Score 现在我想要 select 用户，我 select 从 table2 编辑他们的 ID，我怎么能 select 有id吗？ 我可以 select 用户使用此查询
from v in dc.tbl_Students select v 但我希望 select 一些用户我有他们的 ID。

var qBestMan = (from T in (((from tbl_ActPoints in dc.tbl_ActPoints
                                      select new
                                      {
                                          StudentId = (int?)tbl_ActPoints.StudentId,
                                          Score = (int?)tbl_ActPoints.Score
                                      }).Concat(
                from tbl_EvaPoints in dc.tbl_EvaPoints
                select new
                {
                    StudentId = (int?)tbl_EvaPoints.StudentId,
                    Score = (int?)tbl_EvaPoints.Score
                })))
                         group T by new
                         {
                             T.StudentId
                         } into g
                         orderby g.Sum(p => p.Score) descending
                         select new
                         {
                             g.Key.StudentId,
                             HighScoreUser = g.Sum(p => p.Score)
                         }).ToArray();

Answer 1

尝试这样的事情：

        //qBestMan must be a List, or a IEnumarable and not a Array. Remove the .ToArray() at the end, or substitute it by .ToList()
        var Result =    from users in dc.tbl_Students
                        join bestMen in qBestMan on bestMen.StudentId equals users.userid                             
                        select new
                        {
                            //fields that you want
                            example = users.example,
                            other = bestMen.other
                        };