LINQ - not in clause

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

The datasource does not support server side data paging na het filteren mbv LINQ.

Oplossing zit in het omzetten naar list (.ToList())

http://stackoverflow.com/questions/1661292/the-data-source-does-not-support-server-side-data-paging