using System.IO;

using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

            int stringAmount = 10;

            int length = 25;

            List<string> stringList = new List<string>();

            string currentString = "";

            Random rnd = new Random();

            //list of accepted characters

            char[] charList = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k',

                'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',

                '@', '$'};

​

            /*

            for (int i = 64; i < 123; i++) {

​

            char letter = (char)(i);

            Console.WriteLine(letter);

            }

            */

​

            char toAdd;

​

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

            {

                currentString = "";

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

                {

​

                    toAdd = charList[rnd.Next(charList.Length)];

​

                    if ((int)toAdd % 2 == 0)

                    {

                        toAdd = char.ToUpper(toAdd);

                    }

​

                    currentString += toAdd.ToString();

​

                }

​

                stringList.Add(currentString);

​

            }

​

​

            foreach (string s in stringList)

            {

                Console.WriteLine(s);

            }

    }

}