Linq query not in operator

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Hi guys

I need to use not in operator.

I have a service method which returns array of customers
and also i have a table which return list of customers
there is a reference field string same in both
i need to fetch from service only those customer
whose reference number is not in the local data base,
i am doing following not it does not work , i am using entity framework for local
data base.

C#

var qry = from e in _client.GetCustomers(APIKey)
          where entities.Customers.Any(a=> e.Reference== a.Reference)
          select e;

regards.

Posted 31-Jan-12 21:05pm

Tauseef A

Updated 31-Jan-12 21:38pm

Amir Mahfoozi

v2

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Sergey Alexandrovich Kryukov 1-Feb-12 3:34am

What do you want to use; and if not in operator, then in what? :-)
I'm just kidding... at least write "not" in quotation marks, for it's too hard to understand.
--SA

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Dylan Morley · Answer 1 · 2012-01-31T22:08:00

Have a look at this article

http://introducinglinq.com/blogs/marcorusso/archive/2008/01/14/the-not-in-clause-in-linq-to-sql.aspx[^]

e.g

C#

var query =
    from e in _client.GetCustomers(APIKey)
    where !(from o in _client.GetCustomers(APIKey)
            select o.Reference)
           .Contains(e.Reference)
    select e;