如何在picturebox中移动图像？

// 声明一个变量来存储图像的当前位置
private Point currentPosition;

private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
    // 记录鼠标按下时的位置
    currentPosition = e.Location;
}

private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
    // 检查是否按下了鼠标左键并且有图像可移动
    if (e.Button == MouseButtons.Left && currentPosition != null)
    {
        // 计算鼠标移动的距离
        int deltaX = e.X - currentPosition.X;
        int deltaY = e.Y - currentPosition.Y;

        // 更新图像的位置
        currentPosition.X += deltaX;
        currentPosition.Y += deltaY;

        // 重新绘制PictureBox
        pictureBox1.Invalidate();
    }
}

private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
{
    // 停止移动图像
    currentPosition = null;
}

private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
    // 绘制图像
    if (currentPosition != null)
    {
        e.Graphics.DrawImage(image, currentPosition);
    }
}