Visual Basic 6 – How to solve “Invalid use of NULL”?

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Basically do a validation check before running the [gs function].

So let's say you do:

Basically do a validation check before running the function. So let's say you do:

if isnull (somevariable) = True then
msgbox "This cannot be blank"
else
#RUN HERE YOUR FUNCTION
end if

SOURCE

LINK (daniweb.com)

LANGUAGE
ENGLISH