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C# 读取网络上下行有多种方式,其中有一种是使用System.Net.NetworkInformation命名空间中的NetworkInterface类和PerformanceCounter类,该方式其实读的是windows系统的性能计数器中的Network Interface类别的数据。
方式如下:- NetworkInterface networkInterface = NetworkInterface.GetAllNetworkInterfaces()
- .FirstOrDefault(i => i.Name.Equals(interfaceName, StringComparison.OrdinalIgnoreCase));
- if (networkInterface == null)
- {
- Console.WriteLine("Network interface not found.");
- return;
- }
- PerformanceCounter downloadCounter = new PerformanceCounter("Network Interface", "Bytes Received/sec", networkInterface.Description);
- PerformanceCounter uploadCounter = new PerformanceCounter("Network Interface", "Bytes Sent/sec", networkInterface.Description);
- while (true)
- {
- float downloadSpeed = downloadCounter.NextValue();
- float uploadSpeed = uploadCounter.NextValue();
- Console.WriteLine($"Download Speed: {downloadSpeed} bytes/sec");
- Console.WriteLine($"Upload Speed: {uploadSpeed} bytes/sec");
- Thread.Sleep(1000); // 每秒更新一次网速
- }
复制代码 但是使用性能计数器有时候会抛异常:- 异常: System.InvalidOperationException: 类别不存在。
- 在 System.Diagnostics.PerformanceCounterLib.CounterExists(String machine, String category, String counter)
- 在 System.Diagnostics.PerformanceCounter.InitializeImpl()
- 在 System.Diagnostics.PerformanceCounter..ctor(String categoryName, String counterName, String instanceName, Boolean readOnly)
- 在 System.Diagnostics.PerformanceCounter..ctor(String categoryName, String counterName, String instanceName)
复制代码 打开“性能监视器”,点击“性能”,报错
使用网上的各种处理都没办法恢复,所以建议使用其它方式获取网络上下行。
下面是使用WMI (Windows Management Instrumentation)的方式(需要使用管理员身份运行):- string interfaceName = "Ethernet"; // 指定网络接口的名称
- ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PerfFormattedData_Tcpip_NetworkInterface");
- ManagementObjectCollection objects = searcher.Get();
- foreach (ManagementObject obj in objects)
- {
- string name = obj["Name"].ToString();
- if (name.Equals(interfaceName, StringComparison.OrdinalIgnoreCase))
- {
- ulong bytesReceived = Convert.ToUInt64(obj["BytesReceivedPerSec"]);
- ulong bytesSent = Convert.ToUInt64(obj["BytesSentPerSec"]);
- Console.WriteLine($"Download Speed: {bytesReceived} bytes/sec");
- Console.WriteLine($"Upload Speed: {bytesSent} bytes/sec");
- break;
- }
- }
复制代码 如果再不行可能是网卡出异常了
来源:https://www.cnblogs.com/log9527blog/archive/2023/05/23/17426019.html
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