Code for password generator

Question

I'm working on a C# project where I need to generate random passwords.

Can anyone provide some code or a high-level approach for password generation?

It should be possible to specify the following:

1. Minimum password length
2. Maximum password length
3. Valid uppercase characters
4. Minimum number of uppercase chars
5. Valid lowercase chars
6. Minimum number of lowercase chars
7. Valid numeric chars
8. Minimum number of numeric chars
9. Valid alfanum chars.
10. Minimum number of alfanum chars

Answer 1

you can use this method and modify according to your need

private static string CreateRandomPassword(int passwordLength)
{
 string allowedChars = "abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ0123456789!@$?_-";
 char[] chars = new char[passwordLength];
 Random rd = new Random();

 for (int i = 0; i < passwordLength; i++)
 {
  chars[i] = allowedChars[rd.Next(0, allowedChars.Length)];
 }

 return new string(chars);
}