Question

I have a many-to-many query problem in Linq-to-SQL.

I have a table named user.

User has got 2 products > join product.UserID
and Product can be have 2 equipment. Product to Equipments have many to many association

I want to get user’s equipments:

 var match =  from c in ctx.Products                              
    where c.UserID == USERID
    select c.Equipments;

This code returns IQueryable<System.Data.Objects.DataClasses.EntityCollection<Equipments>> typed object.

But I want to get IQueryable<Equipments> typed object. How can I cast?

Answer 1

It sound like you want SelectMany.

var match =  from c in ctx.Products                              
    where c.UserID == USERID
    from e in c.Equipments
    select e;

match is IQueryable<Equipments> now