using System;

using System.Security.Cryptography;

using System.Text;

​

public class RandomStringGenerator

{

    public static string GenerateRandomAlphanumericString(int length)

    {

        const string alphanumericChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

        char[] chars = new char[length];

​

        using (var rng = RandomNumberGenerator.Create())

        {

            byte[] data = new byte[length];

            rng.GetBytes(data);

​

            for (int i = 0; i < length; i++)

            {

                chars[i] = alphanumericChars[data[i] % alphanumericChars.Length];

            }

        }

​

        return new string(chars);

    }

}

​

class Program

{

    static void Main()

    {

        int length = 16; // Specify the desired length of the random string

        string randomString = RandomStringGenerator.GenerateRandomAlphanumericString(length);

​

        Console.WriteLine("Random Alphanumeric String: " + randomString);

​

        // Output the string in reverse

        char[] charArray = randomString.ToCharArray();

        Array.Reverse(charArray);

        string reversedString = new string(charArray);

​

        Console.WriteLine("Reversed Alphanumeric String: " + reversedString);

    }

}

​