Linq To SQL：爲什麼這不起作用？

Question

爲什麼我會從下面得到編譯錯誤？

int[] threadIDs = { 4,5,6,7,8,9,10,11,12,13,14,15,16,17 }; 
CSDataContext db = new CSDataContext(); 
var posts = from p in db.cs_Posts, t in threadIDs 
    where p.ThreadID == t 
    select p.ThreadID; 

Answer 1

再添你到底想幹什麼？選擇列表中包含線程ID的所有文章？

那麼像這樣的工作

int[] threadIDs = {4,5,6,7,8,9,10,11,12,13,14,15,16,17}; 
CSDataContext db = new CSDataContext(); 
var posts = from p in db.cs_Posts 
    where threadIds.Contains(p.ThreadID) 
    select p.ThreadID; 

Answer 2

你嘗試

var posts = from p in db.cs_Posts 
      from t in threadIDs 
      where p.ThreadID == t 
      select p.ThreadID; 

離開了逗號和 '從'