WPF 检测计算机网络连接情况

 1   public static class NetWork
 2     {
 3         [DllImport("wininet.dll")]
 4         private extern static bool InternetGetConnectedState(out int connectionDescription, int reservedValue);
 5 
 6         public static bool IsOnLine()
 7         {
 8             try
 9             {
10                 var connection = 0;
11                 return InternetGetConnectedState(out connection, 0);
12             }
13             catch (Exception)
14             {
15              throw;
16             }
17         }
18     }