Password generator length of 1 to 999 characters

The program allows you to generate a random sequence of 1 to 999 characters. Program settings: - Select the password length; - The choice of characters that generated the sequence: digits, special characters, Latin or Russian capital letters, Latin or Russian capital letters in any combination; - Option to generate without repeating characters (optional added as needed in 2009); There is a button to copy the generated sequence into the buffer. The program is written by me in C #, designed for himself, repeatedly tested in operation.