private void BtnStart_OnClick(object sender, RoutedEventArgs e)
{
if (_ping == null)
{
Debug.Assert(_plotterChildren == null);
Debug.Assert(_ds == null);
try
{
var host = (tbHost.Text ?? string.Empty).Trim();
if (string.IsNullOrWhiteSpace(host))
{
throw new ArgumentException("Host can not be empty.");
}
var interval = TimeSpan.Parse((tbInterval.Text ?? string.Empty));
if (interval <= TimeSpan.Zero)
{
throw new ArgumentException("Interval must be greater than zero.");
}
var timeout = TimeSpan.Parse((tbTimeout.Text ?? string.Empty));
if (timeout <= TimeSpan.Zero)
{
throw new ArgumentException("Timeout must be greater than zero.");
}
_ping = new PingClient(host, interval, timeout);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
_ds = new ObservableDataSource<PingResult>();
_ping.PingTick += PingOnPingTick;
//_ping.PingException += PingOnPingException;
_ds.SetXMapping(item => dateAxis.ConvertToDouble(item.DateTime));
_ds.SetYMapping(item => item.TimeCost.TotalMilliseconds);
_plotterChildren = new IPlotterElement[]
{
new LineGraph(_ds)
{
LinePen = new Pen(new SolidColorBrush(Colors.Green), 2),
Description = new PenDescription(_ping.Host)
},
new MarkerPointsGraph(_ds) {Marker = new CirclePointMarker {Size = 5}}
};
foreach (var child in _plotterChildren)
{
plotter.AddChild(child);
}
Header.Content = string.Format("Ping {0}", _ping.Host);
}
_ping.Start();
btnStart.IsEnabled = false;
btnPause.IsEnabled = true;
pnSettings.IsEnabled = false;
}
private void BtnStop_OnClick(object sender, RoutedEventArgs e)
{
if (_ping != null)
{
_ping.PingTick -= PingOnPingTick;
_ping.Stop();
_ping = null;
Debug.Assert(_plotterChildren != null);
Debug.Assert(_ds != null);
foreach (var child in _plotterChildren)
{
plotter.Children.Remove(child);
}
_plotterChildren = null;
_ds = null;
}
btnStart.IsEnabled = true;
btnPause.IsEnabled = false;
pnSettings.IsEnabled = true;
}
