HEELPBOOK - Visual Basic 6 - How to solve "Invalid use of NULL"? ############################

Basically do a validation check before running the 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


############ ARTICLE INFO #############

Article Month: July
Article Date: 12/07/2012
Permalink: http://heelpbook.altervista.org/2012/visual-basic-6-how-to-solve-invalid-use-of-null/
Source: http://www.daniweb.com/software-development/visual-basic-4-5-6/threads/109254/how-to-solve-invalid-use-of-null-in-vb6
Language: English

View more articles on: http://www.heelpbook.net/
Follow us on Facebook: http://it-it.facebook.com/pages/HeelpBook/100790870008832
Follow us on Twitter: https://twitter.com/#!/HeelpBook
Follow us on RSS Feed: http://feeds.feedburner.com/Heelpbook
Follow us on Delicious: http://delicious.com/heelpbook