VB编程实现扫描同一局域网内的所有电脑的IP地址，并获取该地址所在主机的主机名。本程序只能用于扫描运行本程序所以局域网内的电脑，可以指定IP的起始段、结束段，但不能更改网段地址，原理大致差不多-VB programming to scan the same LAN all the computer IP address, and access to the host of the address where the host name. This procedure can only be us