Is nothing or equal to in one line?

Hi  guys,
Consider the following code block:

sub example(inbound as treeview)
if not inbound is nothing then
    if inbound.nodes.count > 0 then
           'Long piece of DUPLICATED CODE    
          else
           'Special scenario CODE
    end if
else
'Long piece of DUPLICATED CODE
end if
end sub

How can I join the "if not inbound is nothing AND inbound.nodes.count > 0 then" into the same test such that the 'Long piece of DUPLICATED CODE' is not repeated.  I cannot test is nothing whilst also testing for equality in the same line due to an error on the equality test if inbound is nothing forcing me to separate the two tests and therefore repeat the block of code.  I could put the code block in a sub but that would be less tidy in this scenario particularly as a large number of parameters would need to be passed.

thanks in advance!
sub example(inbound as treeview)
if not inbound is nothing then
    if inbound.nodes > 0 then
           'Special scenario CODE
    else
           'Long piece of DUPLICATED CODE
    end if
else
'Long piece of DUPLICATED CODE
end if

end sub

Open in new window

dgloverukAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Russ SuterCommented:
You can use ANDALSO

if (not inbound is nothing) andalso (inbound.nodes > 0) then

Open in new window


the ANDALSO keyword will short circuit the if statement if the first condition is not met so the second expression won't even be evaluated.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
dgloverukAuthor Commented:
Thank you Russ, I never knew that!
0
dgloverukAuthor Commented:
As a point of interest, why would you ever want/need to use AND instead of ANDALSO?
0
Russ SuterCommented:
I don't have a good answer for you there. I switched from VB.net to C# a long time ago. C# doesn't have this problem.

VB.net also has an ORELSE operator. If the first condition is true it won't bother evaluating the second condition.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Visual Basic.NET

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.