C#判断地址是否通的

 1         /// <summary>
 2         /// ping 域名地址是否通畅
 3         /// </summary>
 4         /// <returns></returns>
 5         public async static Task<bool> PingAsync(string ip, int timeout = 5000)
 6         {
 7             try
 8             {
 9                 var pr = await (new Ping()).SendPingAsync(ip, timeout);
10                 if (pr != null && pr.Status == IPStatus.Success)//如果ping成功
11                 {
12                     return true;
13                 }
14             }
15             catch (PingException ex)
16             {
17                 Util.SystemStatus.Instance.Network = NetworkStatus.Faulty;
18                 Util.Log.Logger.Error("网络连接异常：" + ex.Message);
19             }
20             return false;
21         }

判断是否可以连接

 1         /// <summary>
 2         /// 判断网络的连接状态
 3         /// </summary>
 4         /// <returns>
 5         /// 网络状态(1-->未联网;2-->采用调治解调器上网;3-->采用网卡上网)
 6         ///</returns>
 7         public static int GetNetConStatus(string strNetAddress)
 8         {
 9             int iNetStatus = 0;
10             int dwFlag = new int();
11             if (!InternetGetConnectedState(ref dwFlag, 0))
12             {
13                 //没有能连上互联网
14                 iNetStatus = 1;
15             }
16             else if ((dwFlag & INTERNET_CONNECTION_MODEM) != 0)
17             {
18                 //采用调治解调器上网,需要进一步判断能否登录具体网站
19                 if (PingNetAddress(strNetAddress))
20                 {
21                     //可以ping通给定的网址,网络OK
22                     iNetStatus = 2;
23                 }
24                 else
25                 {
26                     //不可以ping通给定的网址,网络不OK
27                     iNetStatus = 4;
28                 }
29             }
30             else if ((dwFlag & INTERNET_CONNECTION_LAN) != 0)
31             {
32                 //采用网卡上网,需要进一步判断能否登录具体网站
33                 if (PingNetAddress(strNetAddress))
34                 {
35                     //可以ping通给定的网址,网络OK
36                     iNetStatus = 3;
37                 }
38                 else
39                 {
40                     //不可以ping通给定的网址,网络不OK
41                     iNetStatus = 5;
42                 }
43             }
44             Console.WriteLine("网络状态：" + iNetStatus);
45             return iNetStatus;
46         }
47 
48         /// <summary>
49         /// ping 具体的网址看能否ping通
50         /// </summary>
51         /// <param name="strNetAdd"></param>
52         /// <returns></returns>
53         public static bool PingNetAddress(string strNetAdd)
54         {
55             bool Flage = false;
56             Ping ping = new Ping();
57             try
58             {
59                 PingReply pr = ping.Send(strNetAdd, 5000);
60                 if (pr.Status == IPStatus.TimedOut)
61                 {
62                     Flage = false;
63                 }
64                 if (pr.Status == IPStatus.Success)
65                 {
66                     Flage = true;
67                 }
68                 else
69                 {
70                     Flage = false;
71                 }
72             }
73             catch (Exception ex)
74             {
75                 Console.WriteLine(ex);
76                 Flage = false;
77             }
78             Console.WriteLine("Ping网络状态：" + Flage);
79             return Flage;
80         }

posted on 2023-04-10 16:38 湘灵阅读(113) 评论(0) 编辑收藏举报