Creating a Random Password

For creating Random Password,we will use a combination of alpha-numeric password,we can use below code:-

public string CreateRandomPassword(int PasswordLength)
{
        string allowedChars = "abcdefghijkmnpqrtuvwxyzACDEFHJKLMNPQRTUVWXY";
        string allowedNums = "2345789";
        Random randNum = new Random();
        char[] chars = new char[PasswordLength];

        bool flg = true;

        for (int i = 0; i < PasswordLength; i++)
        {
            if (flg)
            {
                chars[i] = allowedChars[(int)((allowedChars.Length) * randNum.NextDouble())];
            }
            else
            {
                chars[i] = allowedNums[(int)((allowedNums.Length) * randNum.NextDouble())];
            }

            flg = !flg;
        }

        return new string(chars);
}

Response.Write("Random Password for length having 10->" + CreateRandomPassword(10) + "<br/>");
--> Will create Random password having 10 characters

Response.Write("Random Password for length having 2->" + CreateRandomPassword(2) + "<br/>");
--> Will create Random password having 2 characters

Response.Write("Random Password for length having 5->" + CreateRandomPassword(5) + "<br/>");
--> Will create Random password having 5 characters

Response.Write("Random Password for length having 7->" + CreateRandomPassword(7) + "<br/>");
--> Will create Random password having 7 characters