EntitySet.Where(myPredicate) throws NotSupportedException

Question

EDIT: Let\'s try this again. This time I\'ve used the AdventureWorks sample database so you can all play along. This will rule out anything crazy I\'ve do

Answer 1

I'd refactor the original like this

private bool IsYourPredicateSatisfied(Maintenance plan)
{
  return plan.CancelDate == null && plan.UpgradeDate == null;
}

Then your Where clause is Where(m => IsYourPredicateSatisfied(m))