public Maze( )//构造方法
        {
            InitializeComponent();            
            this.Width = xCount * (edgeLen + lw) + lw;//控制宽
            this.Height = yCount * (edgeLen + lw) + lw;//控制高
            arrMaze = new int[xCount, yCount];//表达迷宫的二维数组
            begin = new Point(0,0);//路径起点
            end = new Point(yCount - 1, xCount - 1);//路径终点
            arrMaze[begin.X, begin.Y] = -1;//起点
            arrMaze[end.X, end.Y] = -2;//终点
            this.BackColor = Color.LightSkyBlue;
            this.AllowDrop = true;//允许拖放操作
            this.DoubleBuffered = true;//缓冲
            graphic = this.CreateGraphics();

        }