/// <summary>
/// Enable the timer, and add the specified adapter to the monitoredAdapters list
/// </summary>
public void StartMonitoring(NetWorkAdapter adapter)
{
if (!this.monitoredAdapters.Contains(adapter))
{
this.monitoredAdapters.Add(adapter);
adapter.init();
}
timer.Enabled = true;
}
private void timer1_Tick(object sender, EventArgs e)
{
NetWorkAdapter adapter = this.adapters[this.listBox1.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.label5.Text = String.Format("{0:n} kbps", adapter.DownloadSpeedKbps);
this.label6.Text = String.Format("{0:n} kbps", adapter.UploadSpeedKbps);
}
/// <summary>
/// Remove the specified adapter from the monitoredAdapters list, and
/// disable the timer if the monitoredAdapters list is empty.
/// </summary>
public void StopMonitoring(NetWorkAdapter adapter)
{
if (this.monitoredAdapters.Contains(adapter))
{
this.monitoredAdapters.Remove(adapter);
}
if (this.monitoredAdapters.Count == 0)
{
timer.Enabled = false;
}
}
/// <summary>
/// Enumerates network adapters installed on the computer.
/// </summary>
private void EnumerateNetworkAdapters()
{
PerformanceCounterCategory category = new PerformanceCounterCategory("Network Interface");
foreach (string name in category.GetInstanceNames())
{
// This one exists on every computer.
if (name == "MS TCP Loopback interface")
{
continue;
}
// Create an instance of NetworkAdapter class, and create performance counters for it.
NetWorkAdapter adapter = new NetWorkAdapter(name);
adapter.dlCounter = new PerformanceCounter("Network Interface", "Bytes Received/sec", name);
adapter.ulCounter = new PerformanceCounter("Network Interface", "Bytes Sent/sec", name);
this.adapters.Add(adapter); // Add it to ArrayList adapter
}
}
