获取电脑的网络连接状态（四）IPHost

 1     public static bool IsIPHostConnected()
 2     {
 3         try
 4         {
 5             System.Net.IPHostEntry i = System.Net.Dns.GetHostEntry("www.google.com");
 6             return true;
 7         }
 8         catch
 9         {
10             // ignored
11         }
12         return false;
13     }