simulate conway's game of life in csharp

main.cs
class GameOfLife {
    private int[,] grid;
    private int size;
    
    public GameOfLife(int size) {
        this.size = size;
        this.grid = new int[size, size];
    }
    
    public void Randomize() {
        Random rnd = new Random();
        for (int row = 0; row < size; row++) {
            for (int col = 0; col < size; col++) {
                grid[row, col] = rnd.Next(2);
            }
        }
    }
    
    public void Run(int steps) {
        while (steps > 0) {
            int[,] nextGrid = new int[size, size];
            for (int row = 0; row < size; row++) {
                for (int col = 0; col < size; col++) {
                    int neighbors = CountNeighbors(row, col);
                    if (grid[row, col] == 1) {
                        if (neighbors < 2 || neighbors > 3) {
                            nextGrid[row, col] = 0;
                        } else {
                            nextGrid[row, col] = 1;
                        }
                    } else {
                        if (neighbors == 3) {
                            nextGrid[row, col] = 1;
                        } else {
                            nextGrid[row, col] = 0;
                        }
                    }
                }
            }
            grid = nextGrid;
            steps--;
        }
    }
    
    private int CountNeighbors(int row, int col) {
        int count = 0;
        for (int i = -1; i <= 1; i++) {
            for (int j = -1; j <= 1; j++) {
                if (i == 0 && j == 0) continue;
                int r = row + i;
                int c = col + j;
                if (r < 0 || r >= size || c < 0 || c >= size) continue;
                if (grid[r, c] == 1) count++;
            }
        }
        return count;
    }
    
    public void Print() {
        for (int row = 0; row < size; row++) {
            for (int col = 0; col < size; col++) {
                Console.Write(grid[row, col] == 1 ? "X" : ".");
            }
            Console.WriteLine();
        }
    }
}
2042 chars
68 lines

main.cs
GameOfLife game = new GameOfLife(10);
game.Randomize();
game.Print();
game.Run(10);
game.Print();
98 chars
6 lines