ok, based on what people say,

using System;
using System.Collections.Generic;

class Program {
  static void Main (string[] args)
  {
    List<int> numbers = new List<int>();
    try
    {
      Console.WriteLine("What number do you want me to count to?");
      int answer = Convert.ToInt32(Console.ReadLine()) + 1;
      for (int i = 0 ; i < answer; i++)
      {
        numbers.Add(i);
        Console.WriteLine(numbers[i]);
      }
      Console.WriteLine(" ");
      Console.WriteLine($"Succesfully counted to {answer - 1}");
      Console.WriteLine(" ");
      Console.WriteLine(" ");
      Console.WriteLine(" ");
    }
    catch
    {
      Console.WriteLine("Number too high");
    }
  }
}