Linq Join() with composite key

Question

I'm trying to make a request with two tables

Table Page : Id, LangId (primary key) PageTypeId, PageTypeLangId (foreign key)

Table PageType : Id, LangId (primary key)

So How to do ? Here, i miss just do add PageTypeLangId

    return context.Pages
            .Join(context.PageTypes, p => p.PageTypeId, pT => pT.Id,(p, pT) => new { p, pT })

i would like :

 select * from Page inner join PageType on Page.PageTypeId=PageType.Id and     Page.PageTypeLangId=PageType.LangId

Thanks for your help !

Answer 1

The following should work:

return context.Pages
              .Where(x => x.PageTypeLangId.HasValue)
              .Join(context.PageTypes,
                    p => new { Id = p.PageTypeId,
                               LangId = p.PageTypeLangId.Value },
                    pT => new { pT.Id, pT.LangId },
                    (p, pT) => new { p, pT });