Linq To SQL:为什么这不起作用？

Question

为什么我会收到以下编译错误？

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

你想做什么？选择列表中包含线程ID的所有帖子？

那么这样的事情就行了起来

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;