There's an article here on CP that is in C#, but might still be of interest to you to get some ideas:
A Simple C# Genetic Algorithm
Here's an article on CP in VB.NET: Data Classification Using VB.NET and Genetic Algorithm
Studying this should also give you some ideas: JGAP
]. It is in java but nevertheless very informative.
There is even something in VB6.0 here: http://home.snu.edu/~brint/vbgalib/