I was writing a little tool for work to check ping latency to our servers in c# wpf. I've done a similar thing with Windows Forms and the occuring problem appears to be the same. After some time i get a bluescreen including memory dump. The problem was caused by ntoskrnl.exe and I have no idea why. All I do is ping some servers every 1000 ms.
Here's my c# code:
using MahApps.Metro.Controls;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Collections.ObjectModel;
using System.Windows.Threading;
using System.Net.NetworkInformation;
using System.ComponentModel;
namespace NetworkChecker
{
/// <summary>
/// Interaktionslogik für MainWindow.xaml
/// </summary>
public partial class MainWindow : MetroWindow
{
ObservableCollection<PingTarget> PingTargets = new ObservableCollection<PingTarget>();
PingTargetHost pth = new PingTargetHost();
public MainWindow()
{
pth.PingTargetList = new ObservableCollection<PingTarget>();
InitializeComponent();
PingTarget ptExample = new PingTarget { TargetName = "Google", TargetIP = "www.google.ch" };
pth.PingTargetList.Add(ptExample);
PingTargetListBox.ItemsSource = pth.PingTargetList;
}
private void AddNewTarget_Click(object sender, RoutedEventArgs e)
{
PingTarget newTarget = new PingTarget { TargetName = NewTargetNametb.Text, TargetIP = NewTargetIPtb.Text };
pth.PingTargetList.Add(newTarget);
}
}
public class PingTarget : INotifyPropertyChanged
{
public PingTarget()
{
PingCollection = new ObservableCollection<KeyValuePair<DateTime, long>>();
this.Active = true;
}
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string name)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(name));
}
}
private string _TargetName;
public string TargetName
{
get { return _TargetName; }
set { _TargetName = value; OnPropertyChanged("TargetName"); }
}
private string _TargetIP;
public string TargetIP
{
get { return _TargetIP; }
set { _TargetIP = value; OnPropertyChanged("TargetIP"); }
}
private ObservableCollection<KeyValuePair<DateTime, long>> _PingCollection;
public ObservableCollection<KeyValuePair<DateTime, long>> PingCollection
{
get { return _PingCollection; }
set { _PingCollection = value; OnPropertyChanged("PingCollection"); }
}
public long MaxPing
{
get
{
return PingCollection.Max(p => p.Value);
}
}
public long MinPing
{
get
{
return PingCollection.Min(p => p.Value);
}
}
public long AvgPing
{
get
{
return (long)PingCollection.Average(p => p.Value);
}
}
private bool _Active;
public bool Active
{
get { return _Active; }
set { _Active = value; OnPropertyChanged("Active"); }
}
}
public class PingTargetHost : INotifyPropertyChanged
{
public PingTargetHost(int PingInterval = 1000)
{
PingFrequency = PingInterval;
Ticker = new DispatcherTimer();
Ticker.Interval = new TimeSpan(0, 0, 0, 0, PingFrequency);
Ticker.Tick += Ticker_Tick;
}
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string name)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(name));
}
}
void Ticker_Tick(object sender, EventArgs e)
{
foreach (PingTarget pt in PingTargetList.Where(pts => pts.Active == true))
{
Ping pingSender = new Ping();
string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
int timeout = 10000;
byte[] buffer = Encoding.ASCII.GetBytes(data);
PingReply Result = pingSender.Send(pt.TargetIP, timeout, buffer);
string Pong = Result.RoundtripTime.ToString();
if (Result.Status == IPStatus.Success)
{
KeyValuePair<DateTime, long> ping = new KeyValuePair<DateTime, long>(DateTime.Now, Result.RoundtripTime);
pt.PingCollection.Add(ping);
}
if (Result.Status == IPStatus.TimedOut)
{
}
}
}
public void StopTicker()
{
Ticker.Stop();
}
public void StartTicker()
{
Ticker.Start();
}
private DispatcherTimer Ticker { get; set; }
public int PingFrequency { get; set; }
public ObservableCollection<PingTarget> PingTargetList { get; set; }
}
}
Here's my WPF code:
<Controls:MetroWindow x:Class="NetworkChecker.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
Title="Simple Network Checker" Height="600" Width="1000">
<Grid x:Name="MainGrid">
<Grid.RowDefinitions>
<RowDefinition />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.5*" />
<ColumnDefinition Width="5" />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<StackPanel Orientation="Horizontal" Grid.Column="1" >
<Separator Style="{StaticResource {x:Static ToolBar.SeparatorStyleKey}}" />
</StackPanel>
<Grid Grid.Column="0">
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition Height="5" />
<RowDefinition Height="150" />
</Grid.RowDefinitions>
<ListBox x:Name="PingTargetListBox" DataContext="{Binding}">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Label Content="{Binding TargetName}" />
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<Separator Margin="2" Grid.Row="1" />
<Grid Grid.Row="2">
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition />
</Grid.ColumnDefinitions>
<TextBox x:Name="NewTargetIPtb" Controls:TextBoxHelper.Watermark="Target IP" Controls:TextBoxHelper.UseFloatingWatermark="True" />
<TextBox x:Name="NewTargetNametb" Grid.Row="1" Controls:TextBoxHelper.Watermark="Target Name" Controls:TextBoxHelper.UseFloatingWatermark="True" />
<Button x:Name="AddNewTarget" Click="AddNewTarget_Click" Content="Hinzufügen" Grid.Row="2" />
</Grid>
</Grid>
<Grid Grid.Column="2" DataContext="{Binding ElementName=PingTargetListBox, Path=SelectedItem}">
<Grid.RowDefinitions >
<RowDefinition />
<RowDefinition Height="5" />
<RowDefinition />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition />
</Grid.ColumnDefinitions>
<ListBox x:Name="DetailsPingListBox" ItemsSource="{Binding PingCollection}">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Label Content="{Binding Key}" />
<Label Content="{Binding Value}" Grid.Column="1" />
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<Separator Grid.Row="1" Margin="2" />
<StackPanel Grid.Row="2">
<CheckBox x:Name="ActiveInactive" IsChecked="{Binding Active}" Content="Aktiv" />
<TextBlock>
Maximum: <TextBlock Text="{Binding MaxPing}" />
</TextBlock>
<TextBlock>
Minimum: <TextBlock Text="{Binding MinPing}" />
</TextBlock>
<TextBlock>
Average: <TextBlock Text="{Binding AvgPing}" />
</TextBlock>
</StackPanel>
</Grid>
</Grid>
Any ideas? I'd really love this tool to work without bluescreens ;)
Thanks a lot for your help!
Mo
