獲取本地主機IP地址

   String strHostName = Dns.GetHostName();
   IPHostEntry iphostentry = Dns.GetHostByName(strHostName);
   int nIP = 0;
   foreach(IPAddress ipaddress in iphostentry.AddressList)
   {
    Console.WriteLine("IP #" + ++nIP + ": " +
                      ipaddress.ToString());
   }
//---------
Dns.GetHostByName(Dns.GetHostName());