阻止picturebox离开窗体底部

   // 获取PictureBox的当前位置

   int currentX = pictureBox1.Location.X;

   int currentY = pictureBox1.Location.Y;

   // 获取PictureBox的宽度和高度

   int pictureBoxWidth = pictureBox1.Width;

   int pictureBoxHeight = pictureBox1.Height;

   // 获取窗体的宽度和高度

   int formWidth = this.Width;

   int formHeight = this.Height;

   // 判断PictureBox是否即将离开窗体底部

   if (currentY + pictureBoxHeight >= formHeight)

   {

       // 将PictureBox的位置设置为窗体底部

       pictureBox1.Location = new Point(currentX, formHeight - pictureBoxHeight);

   }