本文转载自：http://blog.****.net/zhanjianshinian/article/details/8177851
public partial class NetJiankongForm2 : Form
{
public NetJiankongForm2()
{
InitializeComponent();
}
private MyNetWorkMatchClass[] m_MNWMadapters;
private MyNetWorkMonitor monitor;
private void NetJiankongForm2_Load(object sender, EventArgs e)
{
monitor = new MyNetWorkMonitor();
m_MNWMadapters = monitor.Adapters; //获得控制器MyNetWorkMonitor上所有计算机的适配器列表 if (m_MNWMadapters.Length == )
{
listBox1.Enabled = false;
MessageBox.Show("在计算机上没有找到网络适配器");
return;
} listBox1.Items.AddRange(m_MNWMadapters);
} private void listBox1_SelectedIndexChanged(object sender, EventArgs e) //选中其中一个适配器
{
monitor.StopMonitoring();
monitor.StartMonitoring(m_MNWMadapters[listBox1.SelectedIndex]); //控制该适配器开始工作
this.timer1.Start(); //计时开始
} private void timer1_Tick(object sender, EventArgs e) //计时开始,用于每秒钟改变显示速度
{ MyNetWorkMatchClass adapter = m_MNWMadapters[listBox1.SelectedIndex]; //该适配器
textBox_Down.Text = String.Format("{0:n} kbps", adapter.DownloadSpeedKbps); //得到该适配器的下载速度
textBox_Up.Text = String.Format("{0:n} kbps", adapter.UploadSpeedKbps); //得到该适配器的上传速度
}
} public class MyNetWorkMonitor
{
private System.Timers.Timer Monitor_Timer; // 计时器事件执行每秒钟刷新值在适配器。
private ArrayList m_AdaptersList; //该计算机的适配器列表。
private ArrayList m_MonitoredAdapters; //目前控制的适配器列表 public MyNetWorkMonitor()
{
m_AdaptersList = new ArrayList(); //用来保存获取到的计算机的适配器列表
m_MonitoredAdapters = new ArrayList(); //运行的有效的适配器列表 ShowNetAdapter(); //列举出安装在该计算机上面的适配器
Monitor_Timer = new System.Timers.Timer();
Monitor_Timer.Elapsed += new ElapsedEventHandler(timer_ElapsedClick);
}
private void timer_ElapsedClick(object sender, ElapsedEventArgs e) //用于每秒钟刷新速度
{
foreach (MyNetWorkMatchClass adapter in m_MonitoredAdapters) //每秒钟遍历有效的网络适配器
{
adapter.CaculateAndRefresh(); //刷新上传下载速度
} } private void ShowNetAdapter() //列举出安装在该计算机上面的适配器方法
{
PerformanceCounterCategory PCCCategory = new PerformanceCounterCategory("Network Interface");
foreach (string InstanceName in PCCCategory.GetInstanceNames())
{
if (InstanceName == "MS TCP Loopback interface")
continue;
// 创建一个实例Net workAdapter类别，并创建性能计数器它。
MyNetWorkMatchClass myMNWMadapter = new MyNetWorkMatchClass(InstanceName);
myMNWMadapter.m_Performance_Down = new PerformanceCounter("Network Interface", "Bytes Received/sec", InstanceName);
myMNWMadapter.m_Performance_Up = new PerformanceCounter("Network Interface", "Bytes Sent/sec", InstanceName);
m_AdaptersList.Add(myMNWMadapter);
}
} public void StartMonitoring()
{
if (m_AdaptersList.Count > )
{
foreach (MyNetWorkMatchClass myMNWMadapter in m_AdaptersList)
if (!m_MonitoredAdapters.Contains(myMNWMadapter))
{
m_MonitoredAdapters.Add(myMNWMadapter);
myMNWMadapter.Start();
} Monitor_Timer.Enabled = true;
}
} public void StartMonitoring(MyNetWorkMatchClass myMNWMadapter) //控制该适配器开始工作
{
if (!m_MonitoredAdapters.Contains(myMNWMadapter))
{
m_MonitoredAdapters.Add(myMNWMadapter);
myMNWMadapter.Start(); //该适配器调用自己函数开始工作
}
Monitor_Timer.Enabled = true;
} public void StopMonitoring()
{
m_MonitoredAdapters.Clear();
Monitor_Timer.Enabled = false;
} public void StopMonitoring(MyNetWorkMatchClass adapter)
{
if (m_MonitoredAdapters.Contains(adapter))
m_MonitoredAdapters.Remove(adapter);
if (m_MonitoredAdapters.Count == )
Monitor_Timer.Enabled = false;
} public MyNetWorkMatchClass[] Adapters //该控制类所控制的找出所有适配器的适配器列表
{
get
{
return (MyNetWorkMatchClass[])m_AdaptersList.ToArray(typeof(MyNetWorkMatchClass));
}
}
} //一个安装在计算机上的网络适配器，该类可用于获取网络中的流量
public class MyNetWorkMatchClass
{
public override string ToString()
{
return m_strMatchName;
}
public string strMatchName
{
get
{
return m_strMatchName;
}
}
public long DownloadSpeed
{
get
{
return m_lDownLoadSpeed;
}
}
public long UploadSpeed
{
get
{
return m_lUpLoadSpeed;
}
}
public double DownloadSpeedKbps
{
get
{
return this.m_lUpLoadSpeed / 1024.0;
}
} public double UploadSpeedKbps
{
get
{
return this.m_lUpLoadSpeed / 1024.0;
}
}
private long m_lDownLoadNetValues1; //当前的下载速度,字节计算
private long m_lUploadNetValues1; //当前的上传速度
private long m_lDownLoadNetValues2; //一秒前的下载速度,字节计算
private long m_lUploadNetValues2; //一秒前的上传速度 private string m_strMatchName; //此适配器的名字
internal PerformanceCounter m_Performance_Down; //控制下载速度的流量计算中心
internal PerformanceCounter m_Performance_Up; // //控制上传速度的流量计算中心 private long m_lDownLoadSpeed; //每秒钟下载速度
private long m_lUpLoadSpeed; //每秒钟上传速度
public MyNetWorkMatchClass(string strComputerNetName)
{
m_lDownLoadNetValues1 = ;
m_strMatchName = strComputerNetName;
m_lUploadNetValues1 = ;
m_lDownLoadNetValues2 = ;
m_lUploadNetValues2 = ; }
//该适配器准备控制的方法函数
public void Start()
{
m_lUploadNetValues1 = m_Performance_Up.NextSample().RawValue;
m_lDownLoadNetValues1 = m_Performance_Down.NextSample().RawValue; } public void CaculateAndRefresh() //计算速度
{
m_lDownLoadNetValues2 = m_Performance_Down.NextSample().RawValue;
m_lUploadNetValues2 = m_Performance_Up.NextSample().RawValue; m_lDownLoadSpeed = m_lDownLoadNetValues2 - m_lDownLoadNetValues1;
m_lUpLoadSpeed = m_lUploadNetValues2 - m_lUploadNetValues1; m_lDownLoadNetValues1 = m_lDownLoadNetValues2;
m_lUploadNetValues1 = m_lUploadNetValues2;
} }