Хотелось бы показывать в приложении скорость так же, как покахывает таск менеджер.
Нашел такой код
http://stackoverflow.com/questions/10506837/how-do-i-calculate-network-speed
Вроде работает, хоть и сделан по-индийски.
Но: пускаю приложение на вин сервере 2012 и серверный таск менеджер.
Вижу:
приложение показывает скорость: send/receive(kb/s) 29/3 а таск менеджер в это же время 208/24 и т.д.
То есть пропорция сохраняется, а значения отличаются чуть ли не на порядок.
Где ошибка?
Там такой код:
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using System;
using System.Net.NetworkInformation;
using System.Windows.Forms;
namespace InterfaceTrafficWatch
{
/// <summary>
/// Network Interface Traffic Watch
/// by Mohamed Mansour
///
/// Free to use under GPL open source license!
/// </summary>
public partial class MainForm : Form
{
/// <summary>
/// Timer Update (every 1 sec)
/// </summary>
private const double timerUpdate = 1000;
/// <summary>
/// Interface Storage
/// </summary>
private NetworkInterface[] nicArr;
/// <summary>
/// Main Timer Object
/// (we could use something more efficient such
/// as interop calls to HighPerformanceTimers)
/// </summary>
private Timer timer;
/// <summary>
/// Constructor
/// </summary>
public MainForm()
{
InitializeComponent();
InitializeNetworkInterface();
InitializeTimer();
}
/// <summary>
/// Initialize all network interfaces on this computer
/// </summary>
private void InitializeNetworkInterface()
{
// Grab all local interfaces to this computer
nicArr = NetworkInterface.GetAllNetworkInterfaces();
// Add each interface name to the combo box
for (int i = 0; i < nicArr.Length; i++)
cmbInterface.Items.Add(nicArr[i].Name);
// Change the initial selection to the first interface
cmbInterface.SelectedIndex = 0;
}
/// <summary>
/// Initialize the Timer
/// </summary>
private void InitializeTimer()
{
timer = new Timer();
timer.Interval = (int)timerUpdate;
timer.Tick += new EventHandler(timer_Tick);
timer.Start();
}
/// <summary>
/// Update GUI components for the network interfaces
/// </summary>
private void UpdateNetworkInterface()
{
// Grab NetworkInterface object that describes the current interface
NetworkInterface nic = nicArr[cmbInterface.SelectedIndex];
// Grab the stats for that interface
IPv4InterfaceStatistics interfaceStats = nic.GetIPv4Statistics();
// Calculate the speed of bytes going in and out
// NOTE: we could use something faster and more reliable than Windows Forms Tiemr
// such as HighPerformanceTimer http://www.m0interactive.com/archives/2006/12/21/high_resolution_timer_in_net_2_0.html
int bytesSentSpeed = (int)(interfaceStats.BytesSent - double.Parse(lblBytesSent.Text)) / 1024;
int bytesReceivedSpeed = (int)(interfaceStats.BytesReceived - double.Parse(lblBytesReceived.Text)) / 1024;
// Update the labels
lblSpeed.Text = nic.Speed.ToString();
lblInterfaceType.Text = nic.NetworkInterfaceType.ToString();
lblSpeed.Text = nic.Speed.ToString();
lblBytesReceived.Text = interfaceStats.BytesReceived.ToString();
lblBytesSent.Text = interfaceStats.BytesSent.ToString();
lblUpload.Text = bytesSentSpeed.ToString() + " KB/s";
lblDownload.Text = bytesReceivedSpeed.ToString() + " KB/s";
}
/// <summary>
/// The Timer event for each Tick (second) to update the UI
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void timer_Tick(object sender, EventArgs e)
{
UpdateNetworkInterface();
}
}
}
