WebServerTools/PocConsoleApp/Program.cs

using System;

namespace PocConsoleApp
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            Console.Title = $"Brrrrrrrrrr BW:{Console.BufferWidth} BH:{Console.BufferHeight} WW:{Console.WindowWidth} WH:{Console.WindowHeight}";
            while (true)
            {
                var consoleKeyInfo = Console.ReadKey(true);
                switch (consoleKeyInfo.Key)
                {
                    case ConsoleKey.UpArrow:
                        --Console.CursorTop;
                        Console.Write("U");
                        --Console.CursorLeft;
                        break;

                    case ConsoleKey.DownArrow:
                        ++Console.CursorTop;
                        Console.Write("D");
                        --Console.CursorLeft;
                        break;

                    case ConsoleKey.LeftArrow:
                        --Console.CursorLeft;
                        Console.Write("L");
                        --Console.CursorLeft;
                        break;

                    case ConsoleKey.RightArrow:
                        ++Console.CursorLeft;
                        Console.Write("R");
                        --Console.CursorLeft;
                        break;

                    case ConsoleKey.C:
                        Console.Clear();
                        break;
                }
            }

            for (int i = 0; i < 65536; i++)
            {
                Console.CursorLeft = 0;
                Console.Write("     ");
                Console.CursorLeft = 0;
                Console.Write(i);
            }
        }
    }
}