C#网速监测

主要有两个类，其一是NetworkAdapter，该类的作用是获取本机网络适配器列表，并且可以通过该类的属性获取当前网速数据；其二是NetworkMonitor，该类是通过.NET的PerformanceCounter（性能计数器组件）监测本机每一个网络适配器对应的当前网速状况（翻译得不大好，具体还是看原汁原味的代码吧:)）

NetworkAdapter类

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NetworkMonitor类

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Form关键代码

using NetWorkSpeedMonitor;  
  
        private NetworkAdapter[] adapters;  
        private NetworkMonitor monitor;  
  
        private void FormMain_Load(object sender, System.EventArgs e)  
        {  
            monitor = new NetworkMonitor();  
            this.adapters = monitor.Adapters;  
            /* If the length of adapters is zero, then no instance  
             * exists in the networking category of performance console.*/  
            if (adapters.Length == 0)  
            {  
                this.ListAdapters.Enabled = false;  
                MessageBox.Show("No network adapters found on this computer.");  
                return;  
            }  
            this.ListAdapters.Items.AddRange(this.adapters);  
        }  
  
        private void ListAdapters_SelectedIndexChanged(object sender, System.EventArgs e)  
        {  
            monitor.StopMonitoring();  
            // Start a timer to obtain new performance counter sample every second.  
            monitor.StartMonitoring(adapters[this.ListAdapters.SelectedIndex]);  
            this.TimerCounter.Start();  
        }  
  
        private void TimerCounter_Tick(object sender, System.EventArgs e)  
        {  
            NetworkAdapter adapter = this.adapters[this.ListAdapters.SelectedIndex];  
            /* The DownloadSpeedKbps and UploadSpeedKbps are double values. You can also  
             * use properties DownloadSpeed and UploadSpeed, which are long values but  
             * are measured in bytes per second. */  
            this.LableDownloadValue.Text = String.Format("{0:n} kbps", adapter.DownloadSpeedKbps);  
            this.LabelUploadValue.Text = String.Format("{0:n} kbps", adapter.UploadSpeedKbps);  
        }  

 

 

运行效果：