Linq To SQL：为什么这不起作用？

Question

为什么我会从下面得到编译错误？

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

再添你到底想干什么？选择列表中包含线程ID的所有文章？

那么像这样的工作

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

你尝试

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

离开了逗号和 '从'