How to remove repeatable items in linq query

Question

listOrders.DataSource = (from sp in dbdata.Specifications
                         join ord in dbdata.Orders on sp.O_id equals ord.O_id
                         join prd in dbdata.Products on ord.O_id equals prd.O_ID
                         where sp.Approve == "Yes" && 
                         sp.Awailable_BOM == "Yes" && 
                         prd.Hours_prd == null
                         orderby sp.O_id descending
                         select sp.O_id).Distinct();

in here I am tring to get desceding values. But it always gets ascending values. if I remove "Distinct()" it works properly but after adding "Distinct()" this problem occurs.

you can check this [**`link`**](http://stackoverflow.com/q/298725/1577396) — Mr_Green, Nov 13 '12 at 04:45
I am no pro in linq but did you try `orderby` after `distinct`? — Mr_Green, Nov 13 '12 at 04:50

score 1 · Answer 1 · answered Nov 13 '12 at 04:52

1

Try this:

listOrders.DataSource = (from sp in dbdata.Specifications
                         join ord in dbdata.Orders on sp.O_id equals ord.O_id
                         join prd in dbdata.Products on ord.O_id equals prd.O_ID
                         where sp.Approve == "Yes" && 
                         sp.Awailable_BOM == "Yes" && 
                         prd.Hours_prd == null
                         select sp.O_id).Distinct().OrderByDescending();

answered Nov 13 '12 at 04:52

tallseth

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1

Inside the OrderByDescending shouldn't it be `x => x.O_id`? – matthewr Nov 13 '12 at 05:03
1

0_id is what is being ordered, note the `select`. – tallseth Nov 13 '12 at 05:05

How to remove repeatable items in linq query

1 Answers1