网络判断网络连接有多种办法，通过C#程序也可以判断与远程主机的连接状态。具体实现方法

最新推荐文章于 2021-12-27 20:25:06 发布

CodingSir

最新推荐文章于 2021-12-27 20:25:06 发布

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文章标签：网络 c# null

本文提供了一段C#代码，用于查询并解析本地计算机网络适配器的状态。通过读取Win32_NetworkAdapter类的NetConnectionStatus属性，可以返回适配器当前的连接状态，如已连接、断开等。

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     01 public string NetStatus()
    
    
     02                 {
    
    
     03                         ManagementObjectCollection objects;
    
    
     04                         string status = "";
    
    
     05                         ManagementObjectSearcher searcher = new ManagementObjectSearcher();
    
    
     06                         searcher.Query.QueryString = "Select * From Win32_NetworkAdapter ";
    
    
     07                         objects = searcher.Get();
    
    
     08                         foreach(ManagementObject obj in objects)
    
    
     09                         {
    
    
     10                                 foreach(PropertyData p in obj.Properties)
    
    
     11                                 {
    
    
     12                                         if(p.Name.Equals("NetConnectionStatus"))
    
    
     13                                         {
    
    
     14                                                 if(p.Value!=null)
    
    
     15                                                 {
    
    
     16                                                         status = p.Value.ToString();
    
    
     17                                                 }
    
    
     18                                         }
    
    
     19                                 }
    
    
     20                         }
    
    
     21                         switch(status)
    
    
     22                         {
    
    
     23                                 case "0":
    
    
     24                                         return "Disconnected";
    
    
     25                                 case "1":
    
    
     26                                         return "Connecting ...";
    
    
     27                                 case "2":
    
    
     28                                         return "Connected";
    
    
     29                                 case "3":
    
    
     30                                         return "Disconnecting ...";
    
    
     31                                 case "4":
    
    
     32                                         return "Hardware not present";
    
    
     33                                 case "5":
    
    
     34                                         return "Hardware disabled";
    
    
     35                                 case "6":
    
    
     36                                         return "Hardware malfunction";
    
    
     37                                 case "7":
    
    
     38                                         return "Media disconnected";
    
    
     39                                 case "8":
    
    
     40                                         return "Authenticating";
    
    
     41                                 case "9":
    
    
     42                                         return "Authentication succeeded";
    
    
     43                                 case "10":
    
    
     44                                         return "Authentication failed";
    
    
     45                                 default:
    
    
     46                                         return "";
    
    
     47                         }
    
    
     48                 }