C #, encryption algorithm polyalphabetic cipher Vigenère

C #, encryption algorithm polyalphabetic cipher Vigenère

Objective: To develop an algorithm to encrypt and decrypt messages polyalphabetic cipher Vigenère.
After payment you will receive:
1. The source code for the project in C # with comments.
2. compile the program with intuitive interface.
3. The theoretical material detailing the encryption method.
The program is framed by all the rules of cultural programming.