c#五子棋 棋盘第一行第一列无法落子

Question

初学c#做了个五子棋，其他位置都可以正常落子，但是如图第一行第一列下不了棋，一时看不出如何修改，棋盘是600×600的，特来请教各位大佬

绘制部分主要代码如下

/// <summary>绘制图像</summary>
        private void PictureBox1_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            for (int i = 0; i <= grid.GetUpperBound(0); i++)
            {
                for (int j = 0; j <= grid.GetUpperBound(1); j++)
                {
                    if (grid[i, j] != DotColor.None)
                    {
                        if (grid[i, j] == DotColor.Black)
                        {
                            g.DrawImage(blackBitmap, (i+1)* 40, (j+1)  * 40);
                        }
                        else
                        {
                            g.DrawImage(whiteBitmap, (i+1)* 40,(j+1)  * 40);
                        }
                    }
                }
            }
        }
        /// <summary>在pictureBox1中按下鼠标触发的事件</summary>
        private void PictureBox1_MouseDown(object sender, MouseEventArgs e)
        {
            int x = e.X / 40;
            int y = e.Y / 40;
            int color = -1;
            if (!(x < 1 || x > 15 || y < 1 || y > 15))
            {
                if (grid[x-1 , y -1] == DotColor.None)
                {
                    //  int color = (int)grid[x - 1, y - 1];
                    if (side == 0)
                    {
                        color = 0;

                    }
                    if (side == 1)
                    {
                        color = 1;

                    }
                    //发送格式：UnsetDot,桌号,座位号,行,列,颜色
                    service.SendToServer(string.Format(
                       "UnsetDot,{0},{1},{2},{3},{4}", tableIndex, side, x - 1, y - 1, color));

                }
            }
        }

Answer 1

解决了，服务器端和客户端都改一下就行了