private NetworkInterface[] nicArr;  //网卡集合private Timer timer;    //计时器public MainWindow(){InitializeComponent();InitNetworkInterface();InitializeTimer();}/// <summary>/// 初始化网卡/// </summary>private void InitNetworkInterface(){nicArr = NetworkInterface.GetAllNetworkInterfaces();for (int i = 0; i < nicArr.Length; i++)cboNetworkInterface.Items.Add(nicArr[i].Name);cboNetworkInterface.SelectedIndex = 0;}/// <summary>/// 初始化计时器/// </summary>private void InitializeTimer(){timer = new Timer();timer.Interval = 1000;timer.Elapsed += timer_Elapsed;timer.Start();}void timer_Elapsed(object sender, ElapsedEventArgs e){this.Dispatcher.Invoke(() =>{UpdateNetworkInterface();});}/// <summary>/// 获取网络数据并更新到UI/// </summary>private void UpdateNetworkInterface(){NetworkInterface nic = nicArr[cboNetworkInterface.SelectedIndex];IPv4InterfaceStatistics interfaceStats = nic.GetIPv4Statistics();int bytesSentSpeed = (int)(interfaceStats.BytesSent - double.Parse(txtbBytesSent.Text)) / 1024;int bytesReceivedSpeed = (int)(interfaceStats.BytesReceived - double.Parse(txtbBytesReceived.Text)) / 1024;//更新控件txtbSpeed.Text = nic.Speed.ToString()  +"  "+nic.GetPhysicalAddress().ToString().Trim()+"  "+nic.NetworkInterfaceType.ToString().Trim();//  txtbInterfaceType.Text = nic.NetworkInterfaceType.ToString();//txtbSpeed.Text = nic.Speed.ToString();txtbBytesReceived.Text = interfaceStats.BytesReceived.ToString();txtbBytesSent.Text = interfaceStats.BytesSent.ToString();txtbSentSecond.Text = bytesSentSpeed.ToString() + " KB/s";txtbReceivedSecond.Text = bytesReceivedSpeed.ToString() + " KB/s";}