c# 網路是否串連

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c#  網路是否串連

方案一：

 1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5  6 using System.Runtime.InteropServices;//必須引用這個命名空間 7  8 namespace NetWorkConn_Demo 9 {10     class Program11     {12         [DllImport("wininet.dll")]13         private extern static bool InternetGetConnectedState(out int connectionDescription, int reservedValue);14 15         static void Main(string[] args)16         {17             int flag = 0;18             var isConn = InternetGetConnectedState(out flag, 0);19             if (isConn)20             {21                 Console.WriteLine("網路已串連！");22             }23             else24             {25                 Console.WriteLine("網路已斷開！");26             }27             Console.ReadKey();28         }29     }30 }

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方案二：  【不好】

            Ping p = new Ping();
            PingReply reply = p.Send("192.168.0.0", 100);
            if (reply.Status == IPStatus.Success)
            {
                Console.WriteLine("網路已串連！");
            }
            else
            {
                Console.WriteLine("網路已斷開！");
            }

 

c# 網路是否串連