using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        int count = 1;

        foreach(var number in Program.GetRandomNumbers(5))

        {

            Console.WriteLine("Number " + count + ": " + number);

            count++;

        }

    }

    public static List<int> GetRandomNumbers(int count)

    {

        List<int> randomNumbers = new List<int>(); 

        Random random = new Random();

​

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

        {    

            int number;

​

            do number = random.Next();

            while (randomNumbers.Contains(number));

​

            randomNumbers.Add(number);

        }

​

        return randomNumbers;

    }

}