Question

我有两张桌子：

PlanMaster（PlanName，Product_ID）

和

ProductPoints（Entity_ID，Product_ID，Comm1，Comm2）

现在我将Entity_ID存储到会话中，该会话存储在'int'中：

int getEntity = Int16.Parse(Session["EntitySelected"].ToString());

我想在我的LINQ查询中显示上表中具有

的所有项目

Entity_ID = getEntity

这是我的LINQ查询：

var td = from s in cv.Entity_Product_Points join r in dt.PlanMasters on s.Product_ID equals r.Product_ID
         where s.Entity_ID = getEntity
         select s;

现在它给我一个错误，上面写着：

无法隐式转换类型'int？' 'bool'

这里出了什么问题？感谢您提前的意见！

Answer 1

尝试将其更改为

 where s.Entity_ID == getEntity

Answer 2

var td =
    from s in cv.Entity_Product_Points
    join r in dt.PlanMasters on s.Product_ID equals r.Product_ID
    where s.Entity_ID == getEntity
    select s;

=不等于==

Answer 3

where s.Entity_ID = getEntity应为where s.Entity_ID == getEntity。

Answer 4

不应该是双等于吗？

Answer 5

var db1 = (from a in AccYearEntity.OBLHManifests select a).ToList();
var db2 = (from a in MasterEntity.UserMasters select a).ToList();

var query = (from a in db1
             join b in db2 on a.EnteredBy equals b.UserId
             where a.LHManifestNum == LHManifestNum
             select new { LHManifestId = a.LHManifestId, LHManifestNum = a.LHManifestNum, LHManifestDate = a.LHManifestDate, StnCode = a.StnCode, Operatr = b.UserName }).FirstOrDefault();

Answer 6

我认为这样做，

其中s.Entity_ID == getEntity

使用LINQ连接两个表

6 个答案: