使用LINQ连接两个表

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存储到一个存储在'int'中的Session中:

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

我想在我的LINQ查询中显示上面表格中的所有项目

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应该是where s.Entity_ID == getEntity.