需要轉換成SQL連接與數查詢到LINQ，並通過它來查看

Question

select COUNT([User].UserId) 
    from [User] join Team on [User].TeamId = Team.TeamId where Team.TeamId =2 

這裏是我到目前爲止，但我無法弄清楚如何實現

var countUser = from u in db.Users 
          join t in db.Teams 
          on u.TeamId equals t.TeamId 
          where (u.TeamId == 11) 
          select new 
          { 
          }; 

Answer 1

試試這個

var countUser = (from u in db.Users 
          join t in db.Teams 
          on u.TeamId equals t.TeamId 
          where (u.TeamId == 11) 
          select new 
          { 
           u.UserId 
          }).Count();