Linq where clause with multiple conditions and null check

Posted by SocialAddict on Stack Overflow See other posts from Stack Overflow or by SocialAddict
Published on 2010-03-17T16:43:45Z Indexed on 2010/03/17 16:51 UTC
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where-clause

I'm trying to check if a date is not null in linq and if it isn't check its a past date.

QuestionnaireRepo.FindAll(q => !q.ExpiredDate.HasValue || q.ExpiredDate >DateTime.Now).OrderByDescending(order => order.CreatedDate);

I need the second check to only apply if the first is true. I am using a single repository pattern and FindAll accepted a where clause

ANy ideas? There are lots of similar questions on here but not that give the answer, I'm very new to Linq as you may of guessed :)

Edit: I get the results I require now but it will be checking the > conditional on null values in some cases. Is this not a bad thing?

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