I'm trying to write a subroutine with an optional DateTime parameter. Problem is I can't seem to code a default for it. I've tried "= Nothing", "= New DateTime(DateTime.MinValue)", and "= New DateTime(CType(0, Long))". The compiler rejects them all. I would like to default the parameter to Nothing then be able to check it inside the sub with "If MyDateTime is Nothing Then".

Has anybody else run into this?

Thanks.