DFS matrix

using System;

public class DFSExample
{
    static char[,] matrix = new char[7, 7]
    {
        {' ',' ',' ','X','X','X',' '},
        {' ','X',' ',' ',' ','X',' '},
        {' ','X',' ','X','X','X',' '},
        {' ','X',' ',' ',' ',' ',' '},
        {' ','X',' ','X','X','X',' '},
        {' ','X','X','X','X','X',' '},
        {'E',' ',' ',' ',' ',' ',' '},
    };

    static void PrintMatrix()
    {
        for (int i = 0; i < matrix.GetLength(0); i++)
        {
            for (int j = 0; j < matrix.GetLength(1); j++)
            {
                if (matrix[i, j] == '*')
                {
                    //Console.ForegroundColor = System.ConsoleColor.Red;
                }
                else
                {
                    //Console.ForegroundColor = System.ConsoleColor.White;
                }
                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')
        {
            PrintMatrix();
        }

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

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

    public static void Main(string[] args)
    {
        FindPathToExit(0, 6);
    }
}