一个蛋疼的lambda

C# code

var query=from s in db.SubArea......此处省略select new{....//此处省略Zhan = db.Customer.Where(c => (db.graveTemp.Where(g => g.subarea == s.Id).Select(g => g.gvid).Contains(c.FgrvId)))};//提示错误错误    “System.Linq.IQueryable<int>”不包含“Contains”的定义，并且最佳扩展方法重载 “System.Linq.ParallelEnumerable.Contains<TSource>(System.Linq.ParallelQuery<TSource>, TSource)”的某些参数无效    F:\projects\TombPrj\TombDAL\GraveService.cs    346    60    TombDAL

缩水版表结构如下
SubArea:
Id SubName
graveTemp:
Id FsubAreaId
Customer
Id FgraveTempId
想使Zhan的值为 Customer中出现FgraveTempId为 graveTemp 中FsubAreaId=s.Id(即SubArea中的id)的Id
写成sql为
SELECT COUNT(*) FROM CUSTOMER WHERE FgraveTempId in (select id from graveTemp where FsubAreaid=s.Id)

我貌似描述明白了 不知道你们看着凌乱不。

[解决办法]
try..

C# code

var query=(from s in db.SubArea           join g in db.graveTemp on g.subarea equals s.Id select g.gvid)          .Count(gid => db.Customer.Any(c=>c.FgrvId==gid));
[解决办法]
var query=from s in db.SubArea
......此处省略
select new{
....//此处省略
Zhan = from c in db.Customer
      let subIds=db.graveTemp.Where(g => g.subarea == s.Id).Select(g => g.gvid)
      where subIds.Contains(c.FgrvId)
      select c;
};