我需要一种方法来获取当前系统网络使用情况（上下）。
我在网上找到了一些，但它们不适合我。
感谢您的帮助
代码片段：
private void timerPerf_Tick(object sender, EventArgs e)
{
if (!NetworkInterface.GetIsNetworkAvailable())
return;
NetworkInterface[] interfaces
= NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface ni in interfaces)
{
this.labelnetup.Text = " Bytes Sent: " + ni.GetIPv4Statistics().BytesSent;
this.labelnetdown.Text = " Bytes Rec: " + ni.GetIPv4Statistics().BytesReceived;
}
}
请参阅来自 NetworkInterface 的报告信息：网络统计以获得良好的示例程序：
using System;
using System.Net.NetworkInformation;
class MainClass
{
static void Main()
{
if (!NetworkInterface.GetIsNetworkAvailable())
return;
NetworkInterface[] interfaces
= NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface ni in interfaces)
{
Console.WriteLine(" Bytes Sent: {0}",
ni.GetIPv4Statistics().BytesSent);
Console.WriteLine(" Bytes Received: {0}",
ni.GetIPv4Statistics().BytesReceived);
}
}
}
您也可以通过 PerformanceCounterCategory 来获取当前系统的网络使用情况：
using System;
using System.Diagnostics;
class Program
{
static void Main()
{
PerformanceCounterCategory pcg = new PerformanceCounterCategory("Network Interface");
string instance = pcg.GetInstanceNames()[0];
PerformanceCounter pcsent = new PerformanceCounter("Network Interface", "Bytes Sent/sec", instance);
PerformanceCounter pcreceived = new PerformanceCounter("Network Interface", "Bytes Received/sec", instance);
Console.WriteLine("Bytes Sent: {0}", pcsent.NextValue() / 1024);
Console.WriteLine("Bytes Received: {0}", pcreceived.NextValue() / 1024);
}
}
来源：http://dotnet-snippets.com/snippet/show-network-traffic-sent-and-received/580
这是带有计时器的 Windows 窗体的代码。
Imports System.Net.NetworkInformation
Imports System.Windows.Forms
Namespace InterfaceTrafficWatch
''' <summary>
''' Network Interface Traffic Watch
''' by Mohamed Mansour
'''
''' Free to use under GPL open source license!
''' </summary>
Partial Public Class MainForm
Inherits Form
''' <summary>
''' Timer Update (every 1 sec)
''' </summary>
Private Const timerUpdate As Double = 1000
''' <summary>
''' Interface Storage
''' </summary>
Private nicArr As NetworkInterface()
''' <summary>
''' Main Timer Object
''' (we could use something more efficient such
''' as interop calls to HighPerformanceTimers)
''' </summary>
Private timer As Timer
''' <summary>
''' Constructor
''' </summary>
Public Sub New()
InitializeComponent()
InitializeNetworkInterface()
InitializeTimer()
End Sub
''' <summary>
''' Initialize all network interfaces on this computer
''' </summary>
Private Sub InitializeNetworkInterface()
' Grab all local interfaces to this computer
nicArr = NetworkInterface.GetAllNetworkInterfaces()
' Add each interface name to the combo box
For i As Integer = 0 To nicArr.Length - 1
cmbInterface.Items.Add(nicArr(i).Name)
Next
' Change the initial selection to the first interface
cmbInterface.SelectedIndex = 0
End Sub
''' <summary>
''' Initialize the Timer
''' </summary>
Private Sub InitializeTimer()
timer = New Timer()
timer.Interval = CInt(timerUpdate)
AddHandler timer.Tick, New EventHandler(AddressOf timer_Tick)
'timer.Tick += New EventHandler(AddressOf timer_Tick)
timer.Start()
End Sub
''' <summary>
''' Update GUI components for the network interfaces
''' </summary>
Private Sub UpdateNetworkInterface()
' Grab NetworkInterface object that describes the current interface
Dim nic As NetworkInterface = nicArr(cmbInterface.SelectedIndex)
' Grab the stats for that interface
Dim interfaceStats As IPv4InterfaceStatistics = nic.GetIPv4Statistics()
Dim BS As Double = CDbl(lblBytesSent.Text) * 1024 * 1024
Dim bytesSentSpeed As Double = (interfaceStats.BytesSent - BS) / 1024
Dim BR As Double = CDbl(lblBytesReceived.Text) * 1024 * 1024
Dim bytesReceivedSpeed As Double = (interfaceStats.BytesReceived - BR) / 1024
' Update the labels
lblSpeed.Text = CInt(((nic.Speed) / 1024) / 1024).ToString() + " Mbs"
lblInterfaceType.Text = nic.NetworkInterfaceType.ToString()
'lblSpeed.Text = nic.Speed.ToString()
lblBytesReceived.Text = ((CInt(interfaceStats.BytesReceived / 1024) / 1024)).ToString()
lblBytesSent.Text = ((CInt(interfaceStats.BytesSent.ToString() / 1024) / 1024)).ToString()
lblTimeStamp.Text = Date.Now().ToString()
lblDescription.Text = nic.Description.ToString()
lblPhyAddorMAC.Text = nic.GetPhysicalAddress().ToString()
lblName.Text = nic.Name.ToString()
lblIPStatistics.Text = nic.Id.ToString()
lblUpload.Text = bytesSentSpeed.ToString() + " KB/s"
lblDownload.Text = bytesReceivedSpeed.ToString() + " KB/s"
End Sub
''' <summary>
''' The Timer event for each Tick (second) to update the UI
''' </summary>
''' <param name="sender"></param>
''' <param name="e"></param>
Private Sub timer_Tick(sender As Object, e As EventArgs)
UpdateNetworkInterface()
End Sub
Friend WithEvents cmbInterface As System.Windows.Forms.ComboBox
Friend WithEvents lblSpeed As System.Windows.Forms.Label
Friend WithEvents lblInterfaceType As System.Windows.Forms.Label
Friend WithEvents lblBytesReceived As System.Windows.Forms.Label
Friend WithEvents lblBytesSent As System.Windows.Forms.Label
Friend WithEvents lblUpload As System.Windows.Forms.Label
Friend WithEvents Timer1 As System.Windows.Forms.Timer
Private components As System.ComponentModel.IContainer
Private Sub InitializeComponent()
Me.components = New System.ComponentModel.Container()
Me.cmbInterface = New System.Windows.Forms.ComboBox()
Me.lblSpeed = New System.Windows.Forms.Label()
Me.lblInterfaceType = New System.Windows.Forms.Label()
Me.lblBytesReceived = New System.Windows.Forms.Label()
Me.lblBytesSent = New System.Windows.Forms.Label()
Me.lblUpload = New System.Windows.Forms.Label()
Me.Timer1 = New System.Windows.Forms.Timer(Me.components)
Me.lblDownload = New System.Windows.Forms.Label()
Me.Label1 = New System.Windows.Forms.Label()
Me.Label2 = New System.Windows.Forms.Label()
Me.Label3 = New System.Windows.Forms.Label()
Me.Label4 = New System.Windows.Forms.Label()
Me.Label5 = New System.Windows.Forms.Label()
Me.Label6 = New System.Windows.Forms.Label()
Me.lblTimeStamp = New System.Windows.Forms.Label()
Me.Label8 = New System.Windows.Forms.Label()
Me.lblDescription = New System.Windows.Forms.Label()
Me.Label9 = New System.Windows.Forms.Label()
Me.lblPhyAddorMAC = New System.Windows.Forms.Label()
Me.Label10 = New System.Windows.Forms.Label()
Me.lblName = New System.Windows.Forms.Label()
Me.Label11 = New System.Windows.Forms.Label()
Me.lblIPStatistics = New System.Windows.Forms.Label()
Me.Label13 = New System.Windows.Forms.Label()
Me.Label7 = New System.Windows.Forms.Label()
Me.Label12 = New System.Windows.Forms.Label()
Me.Label14 = New System.Windows.Forms.Label()
Me.SuspendLayout()
'
'cmbInterface
'
Me.cmbInterface.FormattingEnabled = True
Me.cmbInterface.Location = New System.Drawing.Point(139, 24)
Me.cmbInterface.Name = "cmbInterface"
Me.cmbInterface.Size = New System.Drawing.Size(232, 21)
Me.cmbInterface.TabIndex = 0
'
'lblSpeed
'
Me.lblSpeed.AutoSize = True
Me.lblSpeed.Location = New System.Drawing.Point(136, 60)
Me.lblSpeed.Name = "lblSpeed"
Me.lblSpeed.Size = New System.Drawing.Size(13, 13)
Me.lblSpeed.TabIndex = 1
Me.lblSpeed.Text = "0"
'
'lblInterfaceType
'
Me.lblInterfaceType.AutoSize = True
Me.lblInterfaceType.Location = New System.Drawing.Point(136, 84)
Me.lblInterfaceType.Name = "lblInterfaceType"
Me.lblInterfaceType.Size = New System.Drawing.Size(13, 13)
Me.lblInterfaceType.TabIndex = 1
Me.lblInterfaceType.Text = "0"
'
'lblBytesReceived
'
Me.lblBytesReceived.AutoSize = True
Me.lblBytesReceived.Location = New System.Drawing.Point(136, 112)
Me.lblBytesReceived.Name = "lblBytesReceived"
Me.lblBytesReceived.Size = New System.Drawing.Size(13, 13)
Me.lblBytesReceived.TabIndex = 1
Me.lblBytesReceived.Text = "0"
'
'lblBytesSent
'
Me.lblBytesSent.AutoSize = True
Me.lblBytesSent.Location = New System.Drawing.Point(136, 142)
Me.lblBytesSent.Name = "lblBytesSent"
Me.lblBytesSent.Size = New System.Drawing.Size(13, 13)
Me.lblBytesSent.TabIndex = 1
Me.lblBytesSent.Text = "0"
'
'lblUpload
'
Me.lblUpload.AutoSize = True
Me.lblUpload.Location = New System.Drawing.Point(136, 175)
Me.lblUpload.Name = "lblUpload"
Me.lblUpload.Size = New System.Drawing.Size(13, 13)
Me.lblUpload.TabIndex = 1
Me.lblUpload.Text = "0"
'
'lblDownload
'
Me.lblDownload.AutoSize = True
Me.lblDownload.Location = New System.Drawing.Point(136, 202)
Me.lblDownload.Name = "lblDownload"
Me.lblDownload.Size = New System.Drawing.Size(13, 13)
Me.lblDownload.TabIndex = 1
Me.lblDownload.Text = "0"
'
'Label1
'
Me.Label1.AutoSize = True
Me.Label1.Location = New System.Drawing.Point(12, 60)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(38, 13)
Me.Label1.TabIndex = 1
Me.Label1.Text = "Speed"
'
'Label2
'
Me.Label2.AutoSize = True
Me.Label2.Location = New System.Drawing.Point(12, 84)
Me.Label2.Name = "Label2"
Me.Label2.Size = New System.Drawing.Size(73, 13)
Me.Label2.TabIndex = 1
Me.Label2.Text = "InterfaceType"
'
'Label3
'
Me.Label3.AutoSize = True
Me.Label3.Location = New System.Drawing.Point(12, 112)
Me.Label3.Name = "Label3"
Me.Label3.Size = New System.Drawing.Size(82, 13)
Me.Label3.TabIndex = 1
Me.Label3.Text = "Bytes Received"
'
'Label4
'
Me.Label4.AutoSize = True
Me.Label4.Location = New System.Drawing.Point(12, 142)
Me.Label4.Name = "Label4"
Me.Label4.Size = New System.Drawing.Size(58, 13)
Me.Label4.TabIndex = 1
Me.Label4.Text = "Bytes Sent"
'
'Label5
'
Me.Label5.AutoSize = True
Me.Label5.Location = New System.Drawing.Point(12, 175)
Me.Label5.Name = "Label5"
Me.Label5.Size = New System.Drawing.Size(73, 13)
Me.Label5.TabIndex = 1
Me.Label5.Text = "Upload speed"
'
'Label6
'
Me.Label6.AutoSize = True
Me.Label6.Location = New System.Drawing.Point(12, 202)
Me.Label6.Name = "Label6"
Me.Label6.Size = New System.Drawing.Size(87, 13)
Me.Label6.TabIndex = 1
Me.Label6.Text = "Download speed"
'
'lblTimeStamp
'
Me.lblTimeStamp.AutoSize = True
Me.lblTimeStamp.Location = New System.Drawing.Point(116, 369)
Me.lblTimeStamp.Name = "lblTimeStamp"
Me.lblTimeStamp.Size = New System.Drawing.Size(13, 13)
Me.lblTimeStamp.TabIndex = 1
Me.lblTimeStamp.Text = "0"
'
'Label8
'
Me.Label8.AutoSize = True
Me.Label8.Location = New System.Drawing.Point(17, 369)
Me.Label8.Name = "Label8"
Me.Label8.Size = New System.Drawing.Size(60, 13)
Me.Label8.TabIndex = 1
Me.Label8.Text = "TimeStamp"
'
'lblDescription
'
Me.lblDescription.AutoSize = True
Me.lblDescription.Location = New System.Drawing.Point(136, 232)
Me.lblDescription.Name = "lblDescription"
Me.lblDescription.Size = New System.Drawing.Size(13, 13)
Me.lblDescription.TabIndex = 1
Me.lblDescription.Text = "0"
'
'Label9
'
Me.Label9.AutoSize = True
Me.Label9.Location = New System.Drawing.Point(12, 232)
Me.Label9.Name = "Label9"
Me.Label9.Size = New System.Drawing.Size(60, 13)
Me.Label9.TabIndex = 1
Me.Label9.Text = "Description"
'
'lblPhyAddorMAC
'
Me.lblPhyAddorMAC.AutoSize = True
Me.lblPhyAddorMAC.Location = New System.Drawing.Point(136, 259)
Me.lblPhyAddorMAC.Name = "lblPhyAddorMAC"
Me.lblPhyAddorMAC.Size = New System.Drawing.Size(13, 13)
Me.lblPhyAddorMAC.TabIndex = 1
Me.lblPhyAddorMAC.Text = "0"
'
'Label10
'
Me.Label10.AutoSize = True
Me.Label10.Location = New System.Drawing.Point(12, 259)
Me.Label10.Name = "Label10"
Me.Label10.Size = New System.Drawing.Size(82, 13)
Me.Label10.TabIndex = 1
Me.Label10.Text = "PhyAdd or MAC"
'
'lblName
'
Me.lblName.AutoSize = True
Me.lblName.Location = New System.Drawing.Point(136, 288)
Me.lblName.Name = "lblName"
Me.lblName.Size = New System.Drawing.Size(13, 13)
Me.lblName.TabIndex = 1
Me.lblName.Text = "0"
'
'Label11
'
Me.Label11.AutoSize = True
Me.Label11.Location = New System.Drawing.Point(12, 288)
Me.Label11.Name = "Label11"
Me.Label11.Size = New System.Drawing.Size(35, 13)
Me.Label11.TabIndex = 1
Me.Label11.Text = "Name"
'
'lblIPStatistics
'
Me.lblIPStatistics.AutoSize = True
Me.lblIPStatistics.Location = New System.Drawing.Point(136, 312)
Me.lblIPStatistics.Name = "lblIPStatistics"
Me.lblIPStatistics.Size = New System.Drawing.Size(13, 13)
Me.lblIPStatistics.TabIndex = 1
Me.lblIPStatistics.Text = "0"
'
'Label13
'
Me.Label13.AutoSize = True
Me.Label13.Location = New System.Drawing.Point(12, 312)
Me.Label13.Name = "Label13"
Me.Label13.Size = New System.Drawing.Size(39, 13)
Me.Label13.TabIndex = 1
Me.Label13.Text = "NIC ID"
'
'Label7
'
Me.Label7.AutoSize = True
Me.Label7.Location = New System.Drawing.Point(9, 32)
Me.Label7.Name = "Label7"
Me.Label7.Size = New System.Drawing.Size(30, 13)
Me.Label7.TabIndex = 1
Me.Label7.Text = "NICs"
'
'Label12
'
Me.Label12.AutoSize = True
Me.Label12.Location = New System.Drawing.Point(321, 112)
Me.Label12.Name = "Label12"
Me.Label12.Size = New System.Drawing.Size(23, 13)
Me.Label12.TabIndex = 1
Me.Label12.Text = "MB"
'
'Label14
'
Me.Label14.AutoSize = True
Me.Label14.Location = New System.Drawing.Point(321, 142)
Me.Label14.Name = "Label14"
Me.Label14.Size = New System.Drawing.Size(23, 13)
Me.Label14.TabIndex = 1
Me.Label14.Text = "MB"
'
'MainForm
'
Me.ClientSize = New System.Drawing.Size(660, 422)
Me.Controls.Add(Me.Label13)
Me.Controls.Add(Me.lblIPStatistics)
Me.Controls.Add(Me.Label11)
Me.Controls.Add(Me.lblName)
Me.Controls.Add(Me.Label10)
Me.Controls.Add(Me.lblPhyAddorMAC)
Me.Controls.Add(Me.Label9)
Me.Controls.Add(Me.lblDescription)
Me.Controls.Add(Me.Label8)
Me.Controls.Add(Me.lblTimeStamp)
Me.Controls.Add(Me.Label6)
Me.Controls.Add(Me.lblDownload)
Me.Controls.Add(Me.Label5)
Me.Controls.Add(Me.lblUpload)
Me.Controls.Add(Me.Label4)
Me.Controls.Add(Me.lblBytesSent)
Me.Controls.Add(Me.Label3)
Me.Controls.Add(Me.Label2)
Me.Controls.Add(Me.Label14)
Me.Controls.Add(Me.Label12)
Me.Controls.Add(Me.lblBytesReceived)
Me.Controls.Add(Me.Label7)
Me.Controls.Add(Me.Label1)
Me.Controls.Add(Me.lblInterfaceType)
Me.Controls.Add(Me.lblSpeed)
Me.Controls.Add(Me.cmbInterface)
Me.Name = "MainForm"
Me.Text = "Band Width Statistics"
Me.ResumeLayout(False)
Me.PerformLayout()
End Sub
Friend WithEvents lblDownload As System.Windows.Forms.Label
Friend WithEvents Label1 As System.Windows.Forms.Label
Friend WithEvents Label2 As System.Windows.Forms.Label
Friend WithEvents Label3 As System.Windows.Forms.Label
Friend WithEvents Label4 As System.Windows.Forms.Label
Friend WithEvents Label5 As System.Windows.Forms.Label
Friend WithEvents Label6 As System.Windows.Forms.Label
Friend WithEvents lblTimeStamp As System.Windows.Forms.Label
Friend WithEvents Label8 As System.Windows.Forms.Label
Friend WithEvents lblDescription As System.Windows.Forms.Label
Friend WithEvents Label9 As System.Windows.Forms.Label
Friend WithEvents lblPhyAddorMAC As System.Windows.Forms.Label
Friend WithEvents Label10 As System.Windows.Forms.Label
Friend WithEvents lblName As System.Windows.Forms.Label
Friend WithEvents Label11 As System.Windows.Forms.Label
Friend WithEvents lblIPStatistics As System.Windows.Forms.Label
Friend WithEvents Label13 As System.Windows.Forms.Label
Friend WithEvents Label7 As System.Windows.Forms.Label
Friend WithEvents Label12 As System.Windows.Forms.Label
Friend WithEvents Label14 As System.Windows.Forms.Label
End Class
End Namespace
我想添加另一个答案，因为我认为我不是唯一一个想要确定以 MBit/s 为单位而不仅仅是字节的带宽的人：
/// <summary>
/// Measures the bitrate in Mbits for one secund and calculates the MBits
/// </summary>
/// <param name="networkCard">The networkinterface you want the usage of</param>
/// <returns></returns>
public static double GetNetworkUtilization(NetworkInterface networkCard)
{
Stopwatch sw = new Stopwatch();//used to stop the time from strating to measure till the end
sw.Start();
var startSent = networkCard.GetIPStatistics().BytesSent;//gets all bytes sent and received since boot
var startRecv = networkCard.GetIPStatistics().BytesReceived;
Thread.Sleep(1000);//waits for a secund (if you choose smaller values the result will fluctuate a lot due to network spikes)
sw.Stop();//stops the measurement
var bytes_sent = (networkCard.GetIPStatistics().BytesSent - startSent); //gets all bytes sent and received since boot again and remose the initialliy sent byts
var bytes_received = (networkCard.GetIPStatistics().BytesReceived - startRecv);
var bytes_total = bytes_sent + bytes_received;//the sum is the number of bytes sent during the measurment of one second
double mbits = (double)bytes_total * 8 / 1000000 / (((double)sw.ElapsedMilliseconds / 1000));//we now convert bits to bytes and mSec to Sec
return mbits; //and return the value
}
这个函数应该从一个线程调用，以免阻塞 GUI 一秒钟