concatenate column list to textbox with comma delimiter

I have a column of values (numbers) that start at G4 and could go down the column to an unpredictable length. I would like to join the cell values with a comma delimiter in a userform text box (GainTextBox) on its initialize event.
Any help would be appreciated!
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.

Saqib Husain, SyedEngineerCommented:

Dim cel As Range
Me.GainTextBox = ""
For Each cel In Range("G4:G" & Range("G4").End(xlDown).Row)
    Me.GainTextBox = Me.GainTextBox & IIf(Me.GainTextBox = "", "", ",") & cel
Next cel

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
jcgrooveAuthor Commented:
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
VB Script

From novice to tech pro — start learning today.