Question

I am having a real pain in converting this query expression into my LINQ expression.

SELECT 
    r.Disc_code
    ,r.SEX 
FROM RACE r     
WHERE r.EVENT_CODE = 100 
GROUP BY 
    r.SEX
    , r.disc_Code
order by r.disc_code

i can work with one table but i have not seen any example which chains two group expressions in stackoverflow or MSDN. Am i missing some thing ?

Answer 1

to group on multiple criteria you have to do something like this:

var query = from book in books
group book by new {book.author, book.editor} into books;

to access them:

var author = books.Key.author;
var editor = books.Key.editor;