Brave new world

using System;

class Program
{
    static char[,] map = new char[,]
    {
        {'#','#','#','#','#','#','#','#','#','#'},
        {'#',' ',' ','#',' ',' ',' ',' ',' ','#'},
        {'#',' ',' ','#',' ','#','#','#',' ','#'},
        {'#',' ',' ',' ',' ',' ',' ',' ',' ','#'},
        {'#','#','#','#',' ','#',' ','#',' ','#'},
        {'#',' ',' ',' ',' ','#',' ','#',' ','#'},
        {'#',' ','#','#','#','#',' ',' ',' ','#'},
        {'#',' ',' ',' ',' ',' ',' ','#',' ','#'},
        {'#',' ',' ','#',' ','#',' ','#',' ','#'},
        {'#','#','#','#','#','#','#','#','#','#'},
    };

    static void DrawMap(int playerX, int playerY)
    {
        Console.Clear();
        for (int y = 0; y < map.GetLength(0); y++)
        {
            for (int x = 0; x < map.GetLength(1); x++)
            {
                Console.Write(map[y, x]);
            }
            Console.WriteLine();
        }
        Console.SetCursorPosition(playerX, playerY);
        Console.Write('@');
        Console.SetCursorPosition(0, map.GetLength(0));
    }

    static void TryMove(int deltaX, int deltaY, ref int x, ref int y)
    {
        int newX = x + deltaX;
        int newY = y + deltaY;

        if (newX >= 0 && newX < map.GetLength(1) &&
            newY >= 0 && newY < map.GetLength(0))
        {
            if (map[newY, newX] != '#')
            {
                x = newX;
                y = newY;
            }
        }
    }

    static void Main()
    {
        int playerX = 1;
        int playerY = 1;
        Console.CursorVisible = false;

        while (true)
        {
            DrawMap(playerX, playerY);
            ConsoleKeyInfo keyInfo = Console.ReadKey(true);

            switch (keyInfo.Key)
            {
                case ConsoleKey.UpArrow:
                    TryMove(0, -1, ref playerX, ref playerY);
                    break;
                case ConsoleKey.DownArrow:
                    TryMove(0, 1, ref playerX, ref playerY);
                    break;
                case ConsoleKey.LeftArrow:
                    TryMove(-1, 0, ref playerX, ref playerY);
                    break;
                case ConsoleKey.RightArrow:
                    TryMove(1, 0, ref playerX, ref playerY);
                    break;
                case ConsoleKey.Escape:
                    return;
            }
        }
    }
}