Write the prime Number code which output like this?

using System;
    using System.Collections.Generic;

    namespace Csharp
    {
        public class MainTest
        {
            public static List<int> primes = new List<int>();

            static bool IsPrime(int num)
            {
                for (int i = 0; i < primes.Count; i++)
                {
                    if (num % primes[i] == 0) return false;
                }
                return true;
            }
            static void Main(string[] args)
            {
                int num = 0;
                //Count how many prime numbers are generated
                int counter = 0;
                Console.WriteLine("Please input a number：");
                num = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine("Results are:");
                for (int i = 2; i < int.MaxValue; i++)
                {
                    if (IsPrime(i))
                    {
                        primes.Add(i);
                        Console.WriteLine(i);
                        counter++;
                        if (counter == num)
                        {
                            break;
                        }
                    }
                }
            }
        }
    }