Comments by Sam K. Lewis (Top 3 by date)

Thank you so much for your reply, I've tried this:

Dim File As String = "Georgia.txt"
Dim Georgia As String = IO.File.ReadAllLines(File)
If Georgia.Any(Function(l) l = TextBox1.Text) Then
Label1.Text = "Valid"
End If

but not good so far, i think I did a mistake

@OriginalGriff

Thank you so much for your reply, but the thing is they are different set of numbers like zip codes around 8K or maybe even more in different states

So pretty much checking if the zip codes are available for us or not, type zip code in the textbox and check in our list or excel if it's there or not if yes then it's a greenlight