how to make a vigenere cipher solver in vb.net?

[josh wood]

I am making a cipher solver in vb.net 2008 and I have made it solve ciphers for most ciphers but I can't make it do vigenere. I have got three textboxes named "EncryptionVige nere", "SolutionVigene re" and "Key" and a button called "SolveVigen ere"

Note this is not a homework project

[Rabbit]

What do you have so far?

[josh wood]

nothing, I have no idea how to go about this and I can't find anything on the internet

[Rabbit]

Well, you said you've solved most ciphers. The vigenere is related to the caeser cipher so you can start there.