Improve startup

- Some nullability updates

Service/Service.csproj

@@ -11,9 +11,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="LibreHardwareMonitorLib" Version="0.9.5" />
+    <PackageReference Include="LibreHardwareMonitorLib" Version="0.9.6" />
     <PackageReference Include="PipeMethodCalls" Version="4.0.3" />
-    <PackageReference Include="Serilog" Version="4.3.0" />
+    <PackageReference Include="Serilog" Version="4.3.1" />
     <PackageReference Include="Serilog.Sinks.File" Version="7.0.0" />
     <PackageReference Include="TaskScheduler" Version="2.12.2" />
   </ItemGroup>

StatusWindow/App.xaml.cs

@@ -8,7 +8,7 @@ namespace HardwareMonitorStatusWindow.StatusWindow;
 
 public partial class App
 {
-    private List<IDisposable> _windowSourceList;
+    private List<IDisposable>? _windowSourceList;
 
     protected override void OnStartup(StartupEventArgs e)
     {
@@ -30,7 +30,7 @@ public partial class App
 
     protected override void OnExit(ExitEventArgs e)
     {
-        _windowSourceList.ForEach(ws => ws.Dispose());
+        _windowSourceList?.ForEach(ws => ws.Dispose());
 
         base.OnExit(e);
     }

StatusWindow/Data.cs

@@ -6,17 +6,18 @@ using System.Collections.ObjectModel;
 using System.Linq;
 using System.Text.Json;
 using System.Threading.Tasks;
+using Serilog;
 
 namespace HardwareMonitorStatusWindow.StatusWindow;
 
 internal static class Data
 {
-    private static PipeClient<IHardwareMonitorService> _pipeClient;
+    private static PipeClient<IHardwareMonitorService>? _pipeClient;
-    private static IEnumerable<Hardware> _hardware;
+    private static IEnumerable<Hardware>? _hardware;
 
-    internal static ObservableCollection<SensorEntry> SensorEntries { get; set; }
+    internal static ObservableCollection<SensorEntry> SensorEntries { get; set; } = [];
 
-    internal static async Task LoadComputer()
+    private static async Task LoadComputer()
     {
         try
         {
@@ -25,25 +26,28 @@ internal static class Data
         }
         catch (Exception exception)
         {
-
+            Log.Error(exception, "");
         }
     }
 
-    internal static void RefreshComputer()
+    internal static async Task RefreshComputer()
     {
+        if (_pipeClient is not { State: PipeState.Connected })
+            await LoadComputer();
+
         _hardware = _pipeClient.InvokeAsync(service => service.GetHardware()).Result;
     }
 
     internal static void CloseComputer()
     {
-        _pipeClient.Dispose();
+        _pipeClient?.Dispose();
     }
 
-    internal static IList<Hardware> ComputerHardware => _hardware.ToList();
+    internal static IList<Hardware> ComputerHardware => _hardware?.ToList() ?? [];
 
     internal static void Load()
     {
-        SensorEntries = JsonSerializer.Deserialize<ObservableCollection<SensorEntry>>(Settings.Default.Sensors);
+        SensorEntries = JsonSerializer.Deserialize<ObservableCollection<SensorEntry>>(Settings.Default.Sensors) ?? [];
     }
 
     internal static void Save()

StatusWindow/DataErrorDictionary.cs

@@ -7,15 +7,18 @@ namespace HardwareMonitorStatusWindow.StatusWindow;
 
 internal class DataErrorDictionary : Dictionary<string, List<string>>
 {
-    public event EventHandler<DataErrorsChangedEventArgs> ErrorsChanged;
+    public event EventHandler<DataErrorsChangedEventArgs>? ErrorsChanged;
 
     private void OnErrorsChanged(string propertyName)
     {
         ErrorsChanged?.Invoke(this, new DataErrorsChangedEventArgs(propertyName));
     }
 
-    public IEnumerable GetErrors(string propertyName)
+    public IEnumerable? GetErrors(string? propertyName)
     {
+        if (propertyName == null)
+            return null;
+
         return TryGetValue(propertyName, out var value) ? value : null;
     }
 

StatusWindow/Program.cs

@@ -1,4 +1,6 @@
-using Serilog;
+using HardwareMonitorStatusWindow.Service;
+using Microsoft.Win32.TaskScheduler;
+using Serilog;
 using System;
 using System.Diagnostics;
 using Velopack;
@@ -17,7 +19,30 @@ internal class Program
 
         Log.Information("Start");
 
-        VelopackApp.Build().SetLogger(new SerilogVelopackLogger()).Run();
+        var stopServiceHook = new VelopackHook(_ =>
+        {
+            try
+            {
+                using var taskService = new TaskService();
+
+                Log.Information("Checking for task name: {name}", HardwareMonitorService.ScheduledTaskName);
+
+                var existingTask = taskService.FindTask(HardwareMonitorService.ScheduledTaskName);
+
+                Log.Information("Task: {existingTask}", existingTask);
+
+                Log.Information("Stopping task");
+
+                existingTask?.Stop();
+            }
+            catch (Exception exception)
+            {
+                // Ignored
+                Log.Error(exception, "");
+            }
+        });
+
+        VelopackApp.Build().OnBeforeUpdateFastCallback(stopServiceHook).OnBeforeUninstallFastCallback(stopServiceHook).SetLogger(new SerilogVelopackLogger()).Run();
 
         var app = new App();
         app.InitializeComponent();

StatusWindow/Resources.Designer.cs

@@ -169,6 +169,15 @@ namespace HardwareMonitorStatusWindow.StatusWindow {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Current Value.
+        /// </summary>
+        public static string CurrentValueWatermark {
+            get {
+                return ResourceManager.GetString("CurrentValueWatermark", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Delete.
         /// </summary>

StatusWindow/Resources.resx

@@ -248,4 +248,7 @@ Would you like to download and install it now?</value>
   <data name="ServiceNotStarted" xml:space="preserve">
     <value>Waiting for service to start...</value>
   </data>
+  <data name="CurrentValueWatermark" xml:space="preserve">
+    <value>Current Value</value>
+  </data>
 </root>

StatusWindow/SensorEntry.cs

@@ -11,15 +11,14 @@ namespace HardwareMonitorStatusWindow.StatusWindow;
 
 public class SensorEntry : INotifyDataErrorInfo, INotifyPropertyChanged
 {
-    private readonly DataErrorDictionary _dataErrorDictionary;
+    private readonly DataErrorDictionary _dataErrorDictionary = new();
 
     public SensorEntry()
     {
-        _dataErrorDictionary = new DataErrorDictionary();
         _dataErrorDictionary.ErrorsChanged += DataErrorDictionaryErrorsChanged;
     }
 
-    public string Label
+    public string? Label
     {
         get;
         set
@@ -31,7 +30,7 @@ public class SensorEntry : INotifyDataErrorInfo, INotifyPropertyChanged
         }
     }
 
-    public string HardwareId
+    public string? HardwareId
     {
         get;
         set
@@ -41,7 +40,7 @@ public class SensorEntry : INotifyDataErrorInfo, INotifyPropertyChanged
         }
     }
 
-    public string SensorId
+    public string? SensorId
     {
         get;
         set
@@ -52,7 +51,7 @@ public class SensorEntry : INotifyDataErrorInfo, INotifyPropertyChanged
     }
 
     [JsonIgnore]
-    public Hardware? Hardware => Data.ComputerHardware.FirstOrDefault(h => h.Identifier.ToString() == HardwareId);
+    public Hardware? Hardware => Data.ComputerHardware?.FirstOrDefault(h => h.Identifier.ToString() == HardwareId);
 
     [JsonIgnore]
     public Sensor? Sensor => Hardware?.Sensors.FirstOrDefault(s => s.Identifier.ToString() == SensorId);
@@ -60,19 +59,22 @@ public class SensorEntry : INotifyDataErrorInfo, INotifyPropertyChanged
     [JsonIgnore]
     public bool HasErrors => _dataErrorDictionary.Any();
 
-    public IEnumerable GetErrors(string propertyName)
+    public IEnumerable GetErrors(string? propertyName)
     {
-        return _dataErrorDictionary.GetErrors(propertyName);
+        if (string.IsNullOrWhiteSpace(propertyName))
+            throw new InvalidOperationException();
+
+        return _dataErrorDictionary.GetErrors(propertyName) ?? Enumerable.Empty<string>();
     }
 
-    public event EventHandler<DataErrorsChangedEventArgs> ErrorsChanged;
+    public event EventHandler<DataErrorsChangedEventArgs>? ErrorsChanged;
 
-    private void DataErrorDictionaryErrorsChanged(object sender, DataErrorsChangedEventArgs e)
+    private void DataErrorDictionaryErrorsChanged(object? sender, DataErrorsChangedEventArgs e)
     {
         ErrorsChanged?.Invoke(this, new DataErrorsChangedEventArgs(e.PropertyName));
     }
 
-    private bool ValidateLabel(string newValue)
+    private bool ValidateLabel(string? newValue)
     {
         _dataErrorDictionary.ClearErrors(nameof(Label));
 
@@ -84,14 +86,14 @@ public class SensorEntry : INotifyDataErrorInfo, INotifyPropertyChanged
         return false;
     }
 
-    public event PropertyChangedEventHandler PropertyChanged;
+    public event PropertyChangedEventHandler? PropertyChanged;
 
-    protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
+    protected virtual void OnPropertyChanged([CallerMemberName] string? propertyName = null)
     {
         PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
     }
 
-    protected bool SetField<T>(ref T field, T value, [CallerMemberName] string propertyName = null)
+    protected bool SetField<T>(ref T field, T value, [CallerMemberName] string? propertyName = null)
     {
         if (EqualityComparer<T>.Default.Equals(field, value)) return false;
         field = value;

StatusWindow/SettingsWindow/HardwareSettingsPanel.xaml

@@ -58,12 +58,12 @@
                     <DataGridTemplateColumn.CellTemplate>
                         <DataTemplate>
                             <StackPanel>
-                                <TextBlock Text="{Binding Path=Hardware.Type}"
+                                <TextBlock Text="{Binding Path=Hardware.Type, FallbackValue=null}"
                                            Height="Auto"
                                            FontSize="10"
                                            VerticalAlignment="Center"
                                            Margin="0,2,0,2" />
-                                <TextBlock Text="{Binding Path=Hardware.Name}"
+                                <TextBlock Text="{Binding Path=Hardware.Name, FallbackValue=null}"
                                            Height="Auto"
                                            VerticalAlignment="Center" />
                             </StackPanel>
@@ -75,12 +75,12 @@
                     <DataGridTemplateColumn.CellTemplate>
                         <DataTemplate>
                             <StackPanel>
-                                <TextBlock Text="{Binding Path=Sensor.Type}"
+                                <TextBlock Text="{Binding Path=Sensor.Type, FallbackValue=null}"
                                            Height="Auto"
                                            FontSize="10"
                                            VerticalAlignment="Center"
                                            Margin="0,2,0,2" />
-                                <TextBlock Text="{Binding Path=Sensor.Name}"
+                                <TextBlock Text="{Binding Path=Sensor.Name, FallbackValue=null}"
                                            Height="Auto"
                                            VerticalAlignment="Center" />
                             </StackPanel>

StatusWindow/SettingsWindow/HardwareSettingsPanel.xaml.cs

@@ -7,7 +7,7 @@ namespace HardwareMonitorStatusWindow.StatusWindow.SettingsWindow;
 
 public partial class HardwareSettingsPanel
 {
-    private CollectionViewSource _collectionViewSource;
+    private CollectionViewSource? _collectionViewSource;
 
     public HardwareSettingsPanel()
     {
@@ -67,13 +67,13 @@ public partial class HardwareSettingsPanel
         EditSelectedSensor();
     }
 
-    private void AddSensor()
+    private async void AddSensor()
     {
         var sensorEntry = new SensorEntry();
 
         var sensorWindow = new SensorWindow();
 
-        var result = sensorWindow.Display(sensorEntry, Window.GetWindow(this));
+        var result = await sensorWindow.Display(sensorEntry, Window.GetWindow(this));
 
         if (!result.HasValue || !result.Value)
             return;
@@ -83,7 +83,7 @@ public partial class HardwareSettingsPanel
         SetSensorButtonStates();
     }
 
-    private void EditSelectedSensor()
+    private async void EditSelectedSensor()
     {
         if (SensorDataGrid.SelectedItem == null)
             return;
@@ -92,7 +92,7 @@ public partial class HardwareSettingsPanel
 
         var sensorWindow = new SensorWindow();
 
-        sensorWindow.Display(sensorEntry, Window.GetWindow(this));
+        await sensorWindow.Display(sensorEntry, Window.GetWindow(this));
     }
 
     private void DeleteSelectedSensors()
@@ -105,7 +105,7 @@ public partial class HardwareSettingsPanel
         SensorDataGrid.SelectedItems.CopyTo(selectedItems, 0);
 
         foreach (var sensorEntry in selectedItems)
-            Data.SensorEntries.Remove(sensorEntry);
+            Data.SensorEntries?.Remove(sensorEntry);
 
         SetSensorButtonStates();
     }

StatusWindow/SettingsWindow/SensorWindow.xaml

@@ -68,8 +68,14 @@
                       DisplayMemberPath="Name"
                       VirtualizingPanel.IsVirtualizing="False"
                       mah:TextBoxHelper.UseFloatingWatermark="True"
-                      mah:TextBoxHelper.Watermark="{x:Static hardwareMonitorStatusWindow:Resources.SensorWatermark}">
+                      mah:TextBoxHelper.Watermark="{x:Static hardwareMonitorStatusWindow:Resources.SensorWatermark}"
+                      SelectionChanged="SensorComboBox_SelectionChanged">
             </ComboBox>
+            <TextBox Name="CurrentValueTextBox"
+                     mah:TextBoxHelper.UseFloatingWatermark="True"
+                     mah:TextBoxHelper.Watermark="{x:Static hardwareMonitorStatusWindow:Resources.CurrentValueWatermark}"
+                     mah:TextBoxHelper.SelectAllOnFocus="True"
+                     IsReadOnly="True" />
         </StackPanel>
         <StackPanel Grid.Column="0"
                     Grid.Row="1"

StatusWindow/SettingsWindow/SensorWindow.xaml.cs

@@ -1,22 +1,28 @@
-using System.Linq;
+using System;
-using System.Windows;
 using ChrisKaczor.Wpf.Validation;
 using HardwareMonitorStatusWindow.Service;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Timers;
+using System.Windows;
+using System.Windows.Threading;
 
 namespace HardwareMonitorStatusWindow.StatusWindow.SettingsWindow;
 
 public partial class SensorWindow
 {
+    private readonly DispatcherTimer _timer = new();
+
     public SensorWindow()
     {
         InitializeComponent();
     }
 
-    public bool? Display(SensorEntry sensorEntry, Window owner)
+    public async Task<bool?> Display(SensorEntry sensorEntry, Window? owner)
     {
         DataContext = sensorEntry;
 
-        Data.RefreshComputer();
+        await Data.RefreshComputer();
 
         HardwareTypeComboBox.ItemsSource = Data.ComputerHardware.Where(h => h.Sensors.Any()).DistinctBy(h => h.Type).Select(s => new HardwareTypeItem(s.Type)).OrderBy(s => s.Name);
 
@@ -32,9 +38,18 @@ public partial class SensorWindow
 
         Owner = owner;
 
+        _timer.Interval = TimeSpan.FromSeconds(1);
+        _timer.Tick += TimerOnTick;
+        _timer.Start();
+
         return ShowDialog();
     }
 
+    private void TimerOnTick(object? sender, EventArgs e)
+    {
+        UpdateCurrentSensorValue();
+    }
+
     private void HandleOkayButtonClick(object sender, RoutedEventArgs e)
     {
         if (!this.IsValid())
@@ -95,4 +110,26 @@ public partial class SensorWindow
 
         SensorComboBox.ItemsSource = hardware.Sensors.Where(s => s.Type == sensorType.Value);
     }
+
+    private void SensorComboBox_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
+    {
+        UpdateCurrentSensorValue();
+    }
+
+    private void UpdateCurrentSensorValue()
+    {
+        var sensor = (Sensor)SensorComboBox.SelectedItem;
+
+        if (sensor?.Value == null)
+        {
+            CurrentValueTextBox.Text = string.Empty;
+            return;
+        }
+
+        var hardware = (Hardware)HardwareComboBox.SelectedItem;
+
+        var displaySensorEntry = new SensorEntry { HardwareId = hardware.Identifier, SensorId = sensor.Identifier };
+
+        CurrentValueTextBox.Text = string.Format(displaySensorEntry.SensorValueFormat, displaySensorEntry.Sensor!.Value);
+    }
 }

StatusWindow/SettingsWindow/UpdateSettingsPanel.xaml.cs

@@ -1,6 +1,5 @@
 using System.Windows;
 using System.Windows.Input;
-using HardwareMonitorStatusWindow.StatusWindow;
 
 namespace HardwareMonitorStatusWindow.StatusWindow.SettingsWindow;
 

StatusWindow/StatusWindow.csproj

@@ -28,10 +28,10 @@
     <PackageReference Include="ChrisKaczor.Wpf.Controls.Link" Version="1.0.4" />
     <PackageReference Include="ChrisKaczor.Wpf.Validation" Version="1.0.4" />
     <PackageReference Include="ChrisKaczor.Wpf.Windows.CategoryWindow" Version="1.0.2" />
-    <PackageReference Include="ChrisKaczor.Wpf.Windows.FloatingStatusWindow" Version="2.0.0.7" />
+    <PackageReference Include="ChrisKaczor.Wpf.Windows.FloatingStatusWindow" Version="2.0.0.8" />
     <PackageReference Include="gong-wpf-dragdrop" Version="4.0.0" />
     <PackageReference Include="PipeMethodCalls" Version="4.0.3" />
-    <PackageReference Include="Serilog" Version="4.3.0" />
+    <PackageReference Include="Serilog" Version="4.3.1" />
     <PackageReference Include="Serilog.Sinks.File" Version="7.0.0" />
     <PackageReference Include="Velopack" Version="0.0.1298" />
   </ItemGroup>

StatusWindow/WindowSource.cs

@@ -2,6 +2,7 @@
 using ChrisKaczor.Wpf.Windows.FloatingStatusWindow;
 using HardwareMonitorStatusWindow.Service;
 using HardwareMonitorStatusWindow.StatusWindow.SettingsWindow;
+using LibreHardwareMonitor.PawnIo;
 using Microsoft.Win32.TaskScheduler;
 using Serilog;
 using System;
@@ -30,6 +31,17 @@ internal class WindowSource : IWindowSource, IDisposable
         {
             using var taskService = new TaskService();
 
+            if (!PawnIo.IsInstalled)
+            {
+                Log.Information("PawnIO not installed");
+            }
+            else
+            {
+                var pawnIoVersion = PawnIo.Version;
+
+                Log.Information("PawnIO installed: {version}", pawnIoVersion);
+            }
+
             Log.Information("Checking for task name: {name}", HardwareMonitorService.ScheduledTaskName);
 
             var existingTask = taskService.FindTask(HardwareMonitorService.ScheduledTaskName);
@@ -127,7 +139,7 @@ internal class WindowSource : IWindowSource, IDisposable
         return true;
     }
 
-    private async Task Start(bool hasUpdate)
+    private void Start(bool hasUpdate)
     {
         Log.Information("Start: hasUpdate={hasUpdate}", hasUpdate);
 
@@ -136,7 +148,7 @@ internal class WindowSource : IWindowSource, IDisposable
 
         Log.Information("Load");
 
-        await Load();
+        Load();
 
         Log.Information("Starting timer");
 
@@ -145,14 +157,12 @@ internal class WindowSource : IWindowSource, IDisposable
         _timer.Enabled = true;
     }
 
-    private static async Task Load()
+    private static void Load()
     {
-        await Data.LoadComputer();
-
         Data.Load();
     }
 
-    private void Save()
+    private static void Save()
     {
         Data.Save();
     }
@@ -215,22 +225,30 @@ internal class WindowSource : IWindowSource, IDisposable
             if (existingTask == null)
             {
                 _dispatcher.Invoke(() => _floatingStatusWindow.SetText(Resources.ServiceNotInstalled));
+                _timer.Start();
                 return;
             }
 
             if (existingTask.State != TaskState.Running)
             {
                 _dispatcher.Invoke(() => _floatingStatusWindow.SetText(Resources.ServiceNotStarted));
+
+                existingTask.Run();
+                _timer.Start();
+                
                 return;
             }
         }
 
         var text = new StringBuilder();
 
-        Data.RefreshComputer();
+        Data.RefreshComputer().Wait();
 
         foreach (var sensorEntry in Data.SensorEntries)
         {
+            if (sensorEntry.Sensor == null)
+                continue;
+
             if (text.Length > 0)
                 text.AppendLine();