Търсене DFS Path in char matrix

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace DFSExample
{
    class DFSExample
    {
        static char[,] matrix = new char[4, 3]
                        {
                        {' ','X','X'},
                        {' ',' ','X'},
                        {'X',' ',' '},
                        {'X','E',' '}
                        };
            static void ShowMatrix()
            {
                for (int i = 0; i < matrix.GetLength(0); i++)
                {
                    for (int j = 0; j < matrix.GetLength(1); j++)
                    {
                        Console.Write(matrix[i, j] + " ");
                    }
                    Console.WriteLine();
                }
                Console.WriteLine();
                Console.WriteLine();
            }
            static bool InRange(int row, int col)
            {
                bool rowInRange = row >= 0 && row < matrix.GetLength(0);
                bool colInRange = col >= 0 && col < matrix.GetLength(1);
                return rowInRange && colInRange;
            }

            static void FindPathToExit(int row, int col)
            {
                if (!InRange(row, col))
                {
                    return;
                }

                if (matrix[row, col] == 'E')
                {
                    ShowMatrix();
                }

                if (matrix[row, col] != ' ')
                {
                    return;
                }

                matrix[row, col] = 'v';
                FindPathToExit(row, col - 1); // left
                FindPathToExit(row - 1, col); // up
                FindPathToExit(row, col + 1); // right
                FindPathToExit(row + 1, col); // down
                matrix[row, col] = ' ';
            }

            static void Main(string[] args)
            {
                FindPathToExit(2, 2);
            }
        }
}