Get Value of Array Element (Key/Value Pair)

Okay, I have learned a lot today, but really having an issue with this one. I have created an array using import-csv. It has two columns. I want to use the first column as a key and return the value in the second column.
I am sure, knowing PowerShell, that there is probably a very simple way of doing it, but what I've got now is:
$a = $ClientList | Where-Object client_id -EQ "123" | select client_name
So, if $ClientList contains:
111,John Smith
123,Jane Doe
I want to populate $a with "Jane Doe"
However, whet I end up with is:
Jane Doe
How do I return ONLY "Jane Doe" without the header?
LVL 15
Doug BishopDatabase DeveloperAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

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.

For example like this:
$a = $ClientList | Where-Object client_id -EQ "123" | Select-Object -ExpandProperty client_name

Open in new window

or like that:
$a = ($ClientList | Where-Object client_id -EQ "123").client_name

Open in new window

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
Doug BishopDatabase DeveloperAuthor Commented:
Thanks. I love doing research and tryiing to find this stuff out myself, but sometimes it gets so frustrating. You spend two hours looking for an answer using Google, can't find it, ask an expert and in 5 minutes you have your answer. Love it!
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

From novice to tech pro — start learning today.