主要是IP控件的使用：为了获取IP控件的IP值，我们只需要读取此属性即可；通过对IP属性赋值，我们就能够改变IP控件的内容。 -IP control is mainly used: in order to obtain the IP Control IP values, we only need to read this attribute can be through the IP property assignment, we will be able to change the IP c