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LinqToSql where clause not matching null

Posted By:      Posted Date: September 30, 2010    Points: 0   Category :ASP.Net

Hi There,

I have a problem which the were clause in my LinqToSql Query, here is an extract...

private void GetUsersByDOB(DateTime? DOB)


     from usr in GetUsers()  // returns IQueryable of users

     where usr.tblContact.DateOfBirth == (DOB != null ? DOB : usr.tblContact.DateOfBirth)

     select usr;


The query works when a DOB is passed in (weather its null or has a value).... but the problem is, if the data in the DB is NULL, these are never returned whatever the input is.

It's to do with the evaluation of "where usr.tblContact.DateOfBirth == usr.tblContact.DateOfBirth" - am i doing this correct?


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