一个IP切换的工具，里面附带源码，功能非常强大。适合有本本的同志，因为要经常要更换IP和DNS服务器。因为网上找过来的那些IP切换软件放着一大堆的广告，看着就恶心，希望这个程序对大家有一定的帮助。-an IP switching tools, incidental inside source, which is very powerful. Have books for the comrades, often due to the replacement of IP and DNS server

this program is a dns protocol client, sends the query to certain server and analysis the answer to display it, it works using both udp and tcp protocols

C# ip地址，网关地址，广播地址及dns地址获取及设置。-C# ip address, gateway address, broadcast address and dns address to get and set.

Lumisoft.net Dns的例子，通过第三方开源的lumisoft.net库-Lumisoft.net Dns demo