using System;
using System.Collections.Generic;
using System.Text;
 
class RandomGenerator
{
    private Random gen;
    private int num = 0;
    private int[] cache;
 
    public RandomGenerator(int Num)
    {
        this.gen = new Random(unchecked((int)DateTime.Now.Ticks));
        this.num = Num;
        this.cache = new int[Num];
    }
 
    public int[] Get(int left, int right)
    {
        for (int i = 0; i < this.num; i++)
        {
            this.cache[i] = this.gen.Next(left, right);
        }
        return this.cache;
    }
}
 

using System;
using System.Security.Cryptography;
namespace GenPassword
{
  class Program
  {
    public static void Main(string[] args)
    {
      int len = 15;
      Console.WriteLine("Password Length:{0}\nRandom Password:{1}",len,GetPassword(len));
      Console.WriteLine("RamdomInt Length:{0}\nRandom Int:",len);
      foreach (int i in GetRandomInt(len))
        Console.Write(i);
 
      Console.Write("\n\nPress any key to continue . . . ");
      Console.ReadKey(true);
    }
    public static string GetPassword(int passwordlen)
    {
      string password = string.Empty;
      if ((passwordlen < 1)||(passwordlen>18))
        passwordlen = 8;
      byte[] randombyte = new Byte[1];
      int count = 0;
      RNGCryptoServiceProvider rng;
      char ch = '\0';
      while (count < passwordlen)
      {
        //RNGCryptoServiceProvider is an implementation of a random number generator.
        rng = new RNGCryptoServiceProvider();
        rng.GetBytes(randombyte); // The array is now filled with cryptographically strong random bytes.
        ch = Convert.ToChar(randombyte[0]);
        if ((ch > '!')&&(ch <= '~'))
        {
          password += ch.ToString();
          count++;
        }
      }
      return password;
    }
 
    public static int[] GetRandomInt(int intlen)
    {
      if ((intlen < 1)||(intlen>18))
        intlen = 8;
      int[] randomInt = new Int32[intlen];
      byte[] randombyte = new Byte[1];
      int count = 0;
      RNGCryptoServiceProvider rng;
      char ch = '\0';
      int tempint = 0;
      while (count < intlen)
      {
        //RNGCryptoServiceProvider is an implementation of a random number generator.
        rng = new RNGCryptoServiceProvider();
        rng.GetBytes(randombyte); // The array is now filled with cryptographically strong random bytes.
        ch = Convert.ToChar(randombyte[0]);
        if ((ch >= '0')&&(ch <= '9'))
        {
          if (Int32.TryParse(ch.ToString(),out tempint))
          {
            randomInt[count] = tempint;
            count++;
          }
        }
      }
      return randomInt;
    }
  }
}