have you tried to send "Nothing" ?
>In VFP I can send {} as a null (empty?) date, say, as an argument in a call to a function. Within the function, then, if I see the null date argument I know not to use that argument and do something else.
>
>Is there a similar expression in VB.NET? How do I best detect it in the function?
>
>Thanks.
Éric Moreau, MCPD, Visual Developer - Visual Basic MVP
Conseiller Principal / Senior Consultant
Moer inc.
http://www.emoreau.com
