Question

隐形的pictureBox图片如何通过 MouseEnter事件显示？

已经显示的pictureBox1， 通过MouseEnter事件，显示隐形的pictureBox2 。需要怎么做才能完成？

Answer 1

所pictureboxmouseenter事件都绑定同比：
for(int i = 0; i < 5; ++i)
{
PictureBox pb = new PictureBox();
pb.Name = "pictureBox" + i.ToString();
pb.MouseEnter += new System.Windows.Forms.MouseEventHandler(pb_MouseEnter);
}
通参数sender先强制转PictureBox象知道具体哪picturebox

Answer 2

所有的picturebox的mouseenter事件都可以绑定到同一个方法上，比如：
for(int i = 0; i < 5; ++i)
{
PictureBox pb = new PictureBox();
pb.Name = "pictureBox" + i.ToString();
pb.MouseEnter += new System.Windows.Forms.MouseEventHandler(pb_MouseEnter);
}
然后通过将参数sender先强制转为PictureBox对象后，就可以知道具体是哪一个picturebox了。