Show 'Unsupported' in config dialog for monitors without input options

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitea/workflows/release.yaml

@@ -17,23 +17,70 @@ jobs:
         with:
           dotnet-version: '9.0.x'
 
+      - name: Update version in project files
+        shell: powershell
+        run: |
+          $version = "${{ gitea.ref_name }}".TrimStart("v")
+          Write-Host "Setting version to: $version"
+
+          # Update csproj (preserve UTF-8 BOM encoding)
+          $csprojPath = "DellMonitorControl/DellMonitorControl.csproj"
+          $content = [System.IO.File]::ReadAllText($csprojPath)
+          $content = $content -replace '<Version>.*</Version>', "<Version>$version</Version>"
+          $content = $content -replace '<AssemblyVersion>.*</AssemblyVersion>', "<AssemblyVersion>$version.0</AssemblyVersion>"
+          $content = $content -replace '<FileVersion>.*</FileVersion>', "<FileVersion>$version.0</FileVersion>"
+          [System.IO.File]::WriteAllText($csprojPath, $content, [System.Text.UTF8Encoding]::new($true))
+
+          # Update ISS
+          $issPath = "DellMonitorControl/MonitorControl.iss"
+          $issContent = [System.IO.File]::ReadAllText($issPath)
+          $issContent = $issContent -replace '#define MyAppVersion ".*"', "#define MyAppVersion `"$version`""
+          [System.IO.File]::WriteAllText($issPath, $issContent, [System.Text.UTF8Encoding]::new($true))
+
       - name: Restore dependencies
         run: dotnet restore
 
       - name: Build Release
         run: dotnet build --configuration Release --no-restore
 
-      - name: Update version in ISS
-        shell: powershell
+      - name: List build output
+        shell: cmd
         run: |
-          $version = "${{ gitea.ref_name }}".TrimStart("v")
-          $issPath = "DellMonitorControl/MonitorControl.iss"
-          (Get-Content $issPath) -replace '#define MyAppVersion ".*"', "#define MyAppVersion `"$version`"" | Set-Content $issPath
+          echo "Current directory:"
+          cd
+          echo "DellMonitorControl contents:"
+          dir DellMonitorControl
+          echo "DellMonitorControl\bin contents:"
+          dir DellMonitorControl\bin
+          echo "DellMonitorControl\bin\Release contents:"
+          dir DellMonitorControl\bin\Release
+          echo "DellMonitorControl\bin\Release\net9.0-windows contents:"
+          dir DellMonitorControl\bin\Release\net9.0-windows
 
       - name: Build Installer
         shell: cmd
         run: |
-          cd DellMonitorControl && "C:\Program Files (x86)\Inno Setup 6\ISCC.exe" MonitorControl.iss
+          echo Copying to short path to avoid path length issues...
+          mkdir C:\build 2>nul
+          xcopy /E /I /Y DellMonitorControl C:\build\app
+          echo.
+          echo Working from C:\build\app
+          cd /d C:\build\app
+          echo Current directory:
+          cd
+          echo.
+          set TEMP=C:\build\temp
+          set TMP=C:\build\temp
+          mkdir C:\build\temp 2>nul
+          mkdir installer 2>nul
+          echo.
+          echo Running Inno Setup...
+          "C:\Program Files (x86)\Inno Setup 6\ISCC.exe" MonitorControl.iss
+          echo.
+          echo ISCC exit code: %ERRORLEVEL%
+          echo.
+          echo Installer directory contents:
+          dir installer
 
       - name: Create Release
         shell: powershell
@@ -66,7 +113,7 @@ jobs:
           }
 
           # Upload installer
-          $filePath = "DellMonitorControl/installer/MonitorControl-Setup-$version.exe"
+          $filePath = "C:\build\app\installer\MonitorControl-Setup-$version.exe"
           $fileName = "MonitorControl-Setup-$version.exe"
           Write-Host "Uploading $fileName..."
 

DellMonitorControl/App.xaml.cs

@@ -7,13 +7,42 @@ namespace DellMonitorControl
     {
         private TaskbarIcon? _trayIcon;
         private MainWindow? _mainWindow;
+        private UpdateInfo? _pendingUpdate;
 
-        private void Application_Startup(object sender, StartupEventArgs e)
+        private async void Application_Startup(object sender, StartupEventArgs e)
         {
             _trayIcon = (TaskbarIcon)FindResource("TrayIcon");
             _trayIcon.TrayLeftMouseUp += TrayIcon_Click;
+            _trayIcon.TrayBalloonTipClicked += TrayIcon_BalloonTipClicked;
 
             _mainWindow = new MainWindow();
+
+            // Check for updates in background
+            await CheckForUpdatesAsync();
+        }
+
+        private async System.Threading.Tasks.Task CheckForUpdatesAsync()
+        {
+            try
+            {
+                _pendingUpdate = await UpdateChecker.CheckForUpdateAsync();
+                if (_pendingUpdate != null && _trayIcon != null)
+                {
+                    _trayIcon.ShowBalloonTip(
+                        "Update Available",
+                        $"Monitor Control v{_pendingUpdate.LatestVersion} is available.\nClick to download.",
+                        BalloonIcon.Info);
+                }
+            }
+            catch { }
+        }
+
+        private void TrayIcon_BalloonTipClicked(object sender, RoutedEventArgs e)
+        {
+            if (_pendingUpdate != null && !string.IsNullOrEmpty(_pendingUpdate.DownloadUrl))
+            {
+                UpdateChecker.OpenDownloadPage(_pendingUpdate.DownloadUrl);
+            }
         }
 
         private async void TrayIcon_Click(object sender, RoutedEventArgs e)

DellMonitorControl/ConfigWindow.xaml.cs

@@ -34,6 +34,22 @@ public partial class ConfigWindow : Window
         spPorts.Children.Clear();
         _portRows.Clear();
 
+        // Show unsupported message if no ports available
+        if (_availablePorts == null || _availablePorts.Count == 0)
+        {
+            spPorts.Children.Add(new TextBlock
+            {
+                Text = "Unsupported",
+                Foreground = Brushes.Gray,
+                FontSize = 16,
+                FontStyle = FontStyles.Italic,
+                HorizontalAlignment = HorizontalAlignment.Center,
+                VerticalAlignment = VerticalAlignment.Center,
+                Margin = new Thickness(0, 40, 0, 40)
+            });
+            return;
+        }
+
         foreach (var port in _availablePorts)
         {
             var existingPortConfig = config.Ports.FirstOrDefault(p => p.VcpValue == port.Value);

DellMonitorControl/DebugLogger.cs

@@ -0,0 +1,77 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+
+namespace DellMonitorControl;
+
+public static class DebugLogger
+{
+    private static readonly List<string> _logs = new();
+    private static readonly object _lock = new();
+    private static readonly string _logFilePath;
+
+    static DebugLogger()
+    {
+        var tempPath = Path.Combine(Path.GetTempPath(), "CMM");
+        Directory.CreateDirectory(tempPath);
+        _logFilePath = Path.Combine(tempPath, "debug.log");
+    }
+
+    public static void Log(string message)
+    {
+        var entry = $"[{DateTime.Now:HH:mm:ss.fff}] {message}";
+        lock (_lock)
+        {
+            _logs.Add(entry);
+            try
+            {
+                File.AppendAllText(_logFilePath, entry + Environment.NewLine);
+            }
+            catch { }
+        }
+    }
+
+    public static void LogError(string message, Exception? ex = null)
+    {
+        var entry = ex != null
+            ? $"[{DateTime.Now:HH:mm:ss.fff}] ERROR: {message} - {ex.GetType().Name}: {ex.Message}"
+            : $"[{DateTime.Now:HH:mm:ss.fff}] ERROR: {message}";
+        lock (_lock)
+        {
+            _logs.Add(entry);
+            if (ex != null)
+                _logs.Add($"    Stack: {ex.StackTrace}");
+            try
+            {
+                File.AppendAllText(_logFilePath, entry + Environment.NewLine);
+                if (ex != null)
+                    File.AppendAllText(_logFilePath, $"    Stack: {ex.StackTrace}" + Environment.NewLine);
+            }
+            catch { }
+        }
+    }
+
+    public static string GetLogs()
+    {
+        lock (_lock)
+        {
+            return string.Join(Environment.NewLine, _logs);
+        }
+    }
+
+    public static void Clear()
+    {
+        lock (_lock)
+        {
+            _logs.Clear();
+            try
+            {
+                File.WriteAllText(_logFilePath, "");
+            }
+            catch { }
+        }
+    }
+
+    public static string LogFilePath => _logFilePath;
+}

DellMonitorControl/DellMonitorControl.csproj

@@ -12,17 +12,10 @@
 		<Copyright>Copyright © DangWang $([System.DateTime]::Now.ToString(yyyy))</Copyright>
 	</PropertyGroup>
 
-	<PropertyGroup Condition="'$(Configuration)'=='Release'">
-		<Major>1</Major>
-		<Minor>0</Minor>
-		<ProjectStartedDate>$([System.DateTime]::op_Subtraction($([System.DateTime]::get_Now().get_Date()),$([System.DateTime]::new(2023,7,2))).get_TotalDays())</ProjectStartedDate>
-		<DaysSinceProjectStarted>$([System.DateTime]::Now.ToString(Hmm))</DaysSinceProjectStarted>
-		<DateTimeSuffix>$([System.DateTime]::Now.ToString(yyyyMMdd))</DateTimeSuffix>
-		<VersionSuffix>$(Major).$(Minor).$(ProjectStartedDate).$(DaysSinceProjectStarted)</VersionSuffix>
-		<AssemblyVersion Condition=" '$(DateTimeSuffix)' == '' ">0.0.0.1</AssemblyVersion>
-		<AssemblyVersion Condition=" '$(DateTimeSuffix)' != '' ">$(VersionSuffix)</AssemblyVersion>
-		<Version Condition=" '$(DateTimeSuffix)' == '' ">0.0.0.1</Version>
-		<Version Condition=" '$(DateTimeSuffix)' != '' ">$(DateTimeSuffix)</Version>
+	<PropertyGroup>
+		<Version>1.0.16</Version>
+		<AssemblyVersion>1.0.16.0</AssemblyVersion>
+		<FileVersion>1.0.16.0</FileVersion>
 	</PropertyGroup>
 
 	<ItemGroup>

DellMonitorControl/MainWindow.xaml

@@ -215,6 +215,9 @@
                         </Ellipse>
                         <TextBlock Name="loadingText" Text="Loading..." Foreground="LightGray" FontSize="12"
                                    HorizontalAlignment="Center"/>
+                        <Button Name="showLogButton" Content="Show Log" Margin="0,10,0,0"
+                                Style="{StaticResource DarkButton}" FontSize="10"
+                                Click="ShowLogButton_Click" Visibility="Collapsed"/>
                     </StackPanel>
                 </StackPanel>
             </ScrollViewer>

DellMonitorControl/MainWindow.xaml.cs

@@ -9,6 +9,7 @@ using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Media;
 using System.Windows.Media.Animation;
+using System.Windows.Threading;
 
 namespace DellMonitorControl;
 
@@ -16,15 +17,18 @@ public partial class MainWindow : Window
 {
     private List<(XMonitor Monitor, List<InputSourceOption> Options)> _loadedMonitors = new();
     private Storyboard? _spinnerStoryboard;
+    private DispatcherTimer? _showLogButtonTimer;
 
     public MainWindow()
     {
         InitializeComponent();
         _spinnerStoryboard = (Storyboard)FindResource("SpinnerAnimation");
+        DebugLogger.Log("MainWindow initialized");
     }
 
     public void ShowNearTray()
     {
+        DebugLogger.Log("ShowNearTray called");
         var workArea = SystemParameters.WorkArea;
         Left = workArea.Right - Width - 10;
         Top = workArea.Bottom - 350;
@@ -34,10 +38,25 @@ public partial class MainWindow : Window
         // Start spinner
         _spinnerStoryboard?.Begin(this, true);
 
+        // Show log button after 3 seconds if still loading
+        showLogButton.Visibility = Visibility.Collapsed;
+        _showLogButtonTimer?.Stop();
+        _showLogButtonTimer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(3) };
+        _showLogButtonTimer.Tick += (s, e) =>
+        {
+            _showLogButtonTimer.Stop();
+            if (loadingPanel.Visibility == Visibility.Visible || sp.Children.Contains(loadingPanel))
+            {
+                showLogButton.Visibility = Visibility.Visible;
+                DebugLogger.Log("Show Log button displayed (loading took > 3s)");
+            }
+        };
+        _showLogButtonTimer.Start();
+
         Dispatcher.BeginInvoke(new Action(() =>
         {
             Top = workArea.Bottom - ActualHeight - 10;
-        }), System.Windows.Threading.DispatcherPriority.Loaded);
+        }), DispatcherPriority.Loaded);
     }
 
     private void Window_Deactivated(object sender, EventArgs e)
@@ -51,18 +70,86 @@ public partial class MainWindow : Window
         Application.Current.Shutdown();
     }
 
+    private void ShowLogButton_Click(object sender, RoutedEventArgs e)
+    {
+        var logWindow = new Window
+        {
+            Title = "Debug Log",
+            Width = 600,
+            Height = 400,
+            WindowStartupLocation = WindowStartupLocation.CenterScreen,
+            Background = new SolidColorBrush(Color.FromRgb(45, 45, 45))
+        };
+
+        var grid = new Grid();
+        grid.RowDefinitions.Add(new RowDefinition { Height = new GridLength(1, GridUnitType.Star) });
+        grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
+
+        var textBox = new TextBox
+        {
+            Text = DebugLogger.GetLogs(),
+            IsReadOnly = true,
+            Background = new SolidColorBrush(Color.FromRgb(30, 30, 30)),
+            Foreground = Brushes.LightGray,
+            FontFamily = new FontFamily("Consolas"),
+            FontSize = 11,
+            VerticalScrollBarVisibility = ScrollBarVisibility.Auto,
+            HorizontalScrollBarVisibility = ScrollBarVisibility.Auto,
+            TextWrapping = TextWrapping.NoWrap,
+            Margin = new Thickness(10)
+        };
+        Grid.SetRow(textBox, 0);
+        grid.Children.Add(textBox);
+
+        var buttonPanel = new StackPanel { Orientation = Orientation.Horizontal, HorizontalAlignment = HorizontalAlignment.Right, Margin = new Thickness(10) };
+
+        var copyBtn = new Button { Content = "Copy to Clipboard", Padding = new Thickness(10, 5, 10, 5), Margin = new Thickness(0, 0, 10, 0) };
+        copyBtn.Click += (s, args) =>
+        {
+            Clipboard.SetText(DebugLogger.GetLogs());
+            MessageBox.Show("Log copied to clipboard!", "Debug Log", MessageBoxButton.OK, MessageBoxImage.Information);
+        };
+        buttonPanel.Children.Add(copyBtn);
+
+        var openFileBtn = new Button { Content = "Open Log File", Padding = new Thickness(10, 5, 10, 5), Margin = new Thickness(0, 0, 10, 0) };
+        openFileBtn.Click += (s, args) =>
+        {
+            try
+            {
+                System.Diagnostics.Process.Start("explorer.exe", $"/select,\"{DebugLogger.LogFilePath}\"");
+            }
+            catch { }
+        };
+        buttonPanel.Children.Add(openFileBtn);
+
+        var closeBtn = new Button { Content = "Close", Padding = new Thickness(10, 5, 10, 5) };
+        closeBtn.Click += (s, args) => logWindow.Close();
+        buttonPanel.Children.Add(closeBtn);
+
+        Grid.SetRow(buttonPanel, 1);
+        grid.Children.Add(buttonPanel);
+
+        logWindow.Content = grid;
+        logWindow.Show();
+    }
+
     public async Task LoadMonitors()
     {
+        DebugLogger.Log("LoadMonitors started");
         var newChildren = new List<UIElement>();
         _loadedMonitors.Clear();
 
         try
         {
+            DebugLogger.Log("Scanning for monitors...");
             await CMMCommand.ScanMonitor();
+            DebugLogger.Log("Scan complete, reading monitor data...");
             var monitors = (await CMMCommand.ReadMonitorsData()).ToList();
+            DebugLogger.Log($"Found {monitors.Count} monitor(s)");
 
             if (!monitors.Any())
             {
+                DebugLogger.Log("No DDC/CI monitors detected");
                 newChildren.Add(new TextBlock
                 {
                     Text = "No DDC/CI monitors detected",
@@ -76,16 +163,33 @@ public partial class MainWindow : Window
             {
                 foreach (var m in monitors)
                 {
+                    DebugLogger.Log($"Processing monitor: {m.MonitorName} (SN: {m.SerialNumber})");
+
+                    DebugLogger.Log($"  Getting brightness...");
                     var brightness = await CMMCommand.GetBrightness(m.SerialNumber) ?? 50;
+                    DebugLogger.Log($"  Brightness: {brightness}");
+
+                    DebugLogger.Log($"  Getting contrast...");
                     var contrast = await CMMCommand.GetContrast(m.SerialNumber) ?? 50;
+                    DebugLogger.Log($"  Contrast: {contrast}");
+
+                    DebugLogger.Log($"  Getting input source...");
                     var inputSource = await CMMCommand.GetInputSource(m.SerialNumber);
+                    DebugLogger.Log($"  Input source: {inputSource}");
+
+                    DebugLogger.Log($"  Getting input options...");
                     var inputOptions = await CMMCommand.GetInputSourceOptions(m.SerialNumber);
+                    DebugLogger.Log($"  Input options count: {inputOptions.Count}");
+
+                    DebugLogger.Log($"  Getting power status...");
                     var powerStatus = await CMMCommand.GetMonPowerStatus(m.SerialNumber) ?? "Unknown";
+                    DebugLogger.Log($"  Power status: {powerStatus}");
 
                     _loadedMonitors.Add((m, inputOptions));
 
                     // Apply config to filter hidden ports and use custom labels
                     var filteredOptions = MonitorConfigManager.ApplyConfigToOptions(m.SerialNumber, inputOptions);
+                    DebugLogger.Log($"  Filtered options count: {filteredOptions.Count}");
 
                     // Monitor name header with Config button
                     newChildren.Add(CreateMonitorHeader(m, inputOptions));
@@ -100,6 +204,8 @@ public partial class MainWindow : Window
 
                     // Separator
                     newChildren.Add(new Border { Height = 1, Background = new SolidColorBrush(Color.FromRgb(80, 80, 80)), Margin = new Thickness(0, 10, 0, 2) });
+
+                    DebugLogger.Log($"  Monitor {m.MonitorName} processing complete");
                 }
 
                 // Remove last separator
@@ -108,27 +214,33 @@ public partial class MainWindow : Window
             }
 
             // Load quick-switch toolbar
+            DebugLogger.Log("Loading quick-switch toolbar...");
             LoadQuickSwitchToolbar();
+            DebugLogger.Log("Quick-switch toolbar loaded");
         }
         catch (Exception ex)
         {
+            DebugLogger.LogError("LoadMonitors failed", ex);
             newChildren.Clear();
             newChildren.Add(new TextBlock { Text = $"Error: {ex.Message}", Foreground = Brushes.OrangeRed, FontSize = 11, TextWrapping = TextWrapping.Wrap });
         }
 
-        // Stop spinner
+        // Stop spinner and timer
         _spinnerStoryboard?.Stop(this);
+        _showLogButtonTimer?.Stop();
 
         sp.VerticalAlignment = VerticalAlignment.Top;
         sp.Children.Clear();
         foreach (var child in newChildren)
             sp.Children.Add(child);
 
+        DebugLogger.Log("LoadMonitors complete, UI updated");
+
         Dispatcher.BeginInvoke(new Action(() =>
         {
             var workArea = SystemParameters.WorkArea;
             Top = workArea.Bottom - ActualHeight - 10;
-        }), System.Windows.Threading.DispatcherPriority.Loaded);
+        }), DispatcherPriority.Loaded);
     }
 
     private void LoadQuickSwitchToolbar()

DellMonitorControl/MonitorControl.iss

@@ -2,8 +2,10 @@
 #define MyAppVersion "1.0.0"
 #define MyAppPublisher "Dang"
 #define MyAppExeName "DellMonitorControl.exe"
+#define SourcePath "bin\Release\net9.0-windows"
 
 [Setup]
+SourceDir=.
 AppId={{8F3E4A2B-1C5D-4E6F-9A8B-7C2D1E3F4A5B}
 AppName={#MyAppName}
 AppVersion={#MyAppVersion}

DellMonitorControl/UpdateChecker.cs

@@ -0,0 +1,119 @@
+using System;
+using System.Diagnostics;
+using System.Net.Http;
+using System.Reflection;
+using System.Text.Json;
+using System.Threading.Tasks;
+
+namespace DellMonitorControl;
+
+public class UpdateChecker
+{
+    private const string ReleasesApiUrl = "https://git.marketally.com/api/v1/repos/misc/ControlMyMonitorManagement/releases/latest";
+    private static readonly HttpClient _httpClient = new() { Timeout = TimeSpan.FromSeconds(10) };
+
+    public static Version CurrentVersion => Assembly.GetExecutingAssembly().GetName().Version ?? new Version(1, 0, 0);
+
+    public static async Task<UpdateInfo?> CheckForUpdateAsync()
+    {
+        try
+        {
+            DebugLogger.Log($"Checking for updates... Current version: {CurrentVersion}");
+
+            var response = await _httpClient.GetStringAsync(ReleasesApiUrl);
+            var release = JsonSerializer.Deserialize<GiteaRelease>(response);
+
+            if (release == null || string.IsNullOrEmpty(release.tag_name))
+            {
+                DebugLogger.Log("No release info found");
+                return null;
+            }
+
+            var latestVersionStr = release.tag_name.TrimStart('v', 'V');
+            if (!Version.TryParse(latestVersionStr, out var latestVersion))
+            {
+                DebugLogger.Log($"Could not parse version: {release.tag_name}");
+                return null;
+            }
+
+            DebugLogger.Log($"Latest version: {latestVersion}");
+
+            if (latestVersion > CurrentVersion)
+            {
+                // Find the installer asset
+                string? downloadUrl = null;
+                if (release.assets != null)
+                {
+                    foreach (var asset in release.assets)
+                    {
+                        if (asset.name?.EndsWith(".exe", StringComparison.OrdinalIgnoreCase) == true)
+                        {
+                            downloadUrl = asset.browser_download_url;
+                            break;
+                        }
+                    }
+                }
+
+                // Fallback to release page if no direct download
+                downloadUrl ??= release.html_url;
+
+                DebugLogger.Log($"Update available: {latestVersion}, URL: {downloadUrl}");
+
+                return new UpdateInfo
+                {
+                    CurrentVersion = CurrentVersion,
+                    LatestVersion = latestVersion,
+                    DownloadUrl = downloadUrl ?? "",
+                    ReleaseNotes = release.body ?? ""
+                };
+            }
+
+            DebugLogger.Log("No update available");
+            return null;
+        }
+        catch (Exception ex)
+        {
+            DebugLogger.LogError("Update check failed", ex);
+            return null;
+        }
+    }
+
+    public static void OpenDownloadPage(string url)
+    {
+        try
+        {
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = url,
+                UseShellExecute = true
+            });
+        }
+        catch (Exception ex)
+        {
+            DebugLogger.LogError("Failed to open download page", ex);
+        }
+    }
+}
+
+public class UpdateInfo
+{
+    public Version CurrentVersion { get; set; } = new(1, 0, 0);
+    public Version LatestVersion { get; set; } = new(1, 0, 0);
+    public string DownloadUrl { get; set; } = "";
+    public string ReleaseNotes { get; set; } = "";
+}
+
+public class GiteaRelease
+{
+    public string? tag_name { get; set; }
+    public string? name { get; set; }
+    public string? body { get; set; }
+    public string? html_url { get; set; }
+    public GiteaAsset[]? assets { get; set; }
+}
+
+public class GiteaAsset
+{
+    public string? name { get; set; }
+    public string? browser_download_url { get; set; }
+}

Library/Helpers/ConsoleHelper.cs

@@ -19,7 +19,7 @@ internal class ConsoleHelper
             }
         };
 
-    public static async Task<string> ExecuteCommand(string command)
+    public static async Task<string> ExecuteCommand(string command, int timeoutMs = 5000)
     {
         Process p = new Process();
         p.StartInfo.UseShellExecute = false;
@@ -27,10 +27,18 @@ internal class ConsoleHelper
         p.StartInfo.RedirectStandardOutput = true;
         p.StartInfo.FileName = command;
         p.Start();
-        var output = await p.StandardOutput.ReadToEndAsync();
-        await p.WaitForExitAsync();
 
-        return output;
+        var readTask = p.StandardOutput.ReadToEndAsync();
+        var completedTask = await Task.WhenAny(readTask, Task.Delay(timeoutMs));
+
+        if (completedTask != readTask)
+        {
+            // Timeout - kill the process
+            try { p.Kill(true); } catch { }
+            return string.Empty;
+        }
+
+        return await readTask;
     }
 
     public static async Task<string> CmdCommandAsync(params string[] cmds) =>
@@ -40,6 +48,11 @@ internal class ConsoleHelper
         Command(cmdFileName, cmds);
 
     public static async Task<string> CommandAsync(string fileName, params string[] cmds)
+    {
+        return await CommandAsync(fileName, 5000, cmds);
+    }
+
+    public static async Task<string> CommandAsync(string fileName, int timeoutMs, params string[] cmds)
     {
         var p = CreatProcess(fileName);
         p.Start();
@@ -48,14 +61,29 @@ internal class ConsoleHelper
             p.StandardInput.WriteLine(cmd);
         }
         p.StandardInput.WriteLine("exit");
-        var result = await p.StandardOutput.ReadToEndAsync();
-        var error = await p.StandardError.ReadToEndAsync();
-        if (!string.IsNullOrWhiteSpace(error))
-            result = result + "\r\n<Error Message>:\r\n" + error;
-        await p.WaitForExitAsync();
+
+        var readTask = Task.Run(async () =>
+        {
+            var result = await p.StandardOutput.ReadToEndAsync();
+            var error = await p.StandardError.ReadToEndAsync();
+            if (!string.IsNullOrWhiteSpace(error))
+                result = result + "\r\n<Error Message>:\r\n" + error;
+            return result;
+        });
+
+        var completedTask = await Task.WhenAny(readTask, Task.Delay(timeoutMs));
+
+        if (completedTask != readTask)
+        {
+            // Timeout - kill the process
+            try { p.Kill(true); } catch { }
+            return string.Empty;
+        }
+
+        var output = await readTask;
         p.Close();
-        Debug.WriteLine(result);
-        return result;
+        Debug.WriteLine(output);
+        return output;
     }
 
     public static string Command(string fileName, params string[] cmds)

Library/Method/CMMCommand.cs

@@ -30,26 +30,32 @@ public static class CMMCommand
         return ConsoleHelper.CmdCommandAsync($"{CMMexe} /SetValue {monitorSN} D6 4");
     }
 
-    private static async Task<string> GetMonitorValue(string monitorSN, string vcpCode = "D6", int? reTry = 0)
+    private static async Task<string> GetMonitorValue(string monitorSN, string vcpCode = "D6", int maxRetries = 2)
     {
-        var value = string.Empty;
-        while (reTry <= 5)
+        for (int attempt = 0; attempt <= maxRetries; attempt++)
         {
             var cmdFileName = Path.Combine(CMMTmpFolder, $"{Guid.NewGuid()}.bat");
             var cmd = $"{CMMexe} /GetValue {monitorSN} {vcpCode}\r\n" +
                       $"echo %errorlevel%";
             File.WriteAllText(cmdFileName, cmd);
             var values = await ConsoleHelper.ExecuteCommand(cmdFileName);
-            File.Delete(cmdFileName);
+            try { File.Delete(cmdFileName); } catch { }
 
-            value = values.Split("\r\n", StringSplitOptions.RemoveEmptyEntries).LastOrDefault();
+            // Empty result means timeout - don't retry, monitor is unresponsive
+            if (string.IsNullOrEmpty(values))
+                return string.Empty;
 
-            if (!string.IsNullOrEmpty(value) && value != "0") return value;
-            await Task.Delay(500);
-            await GetMonitorValue(monitorSN, vcpCode, reTry++);
-        };
+            var value = values.Split("\r\n", StringSplitOptions.RemoveEmptyEntries).LastOrDefault();
 
-        return value;
+            if (!string.IsNullOrEmpty(value) && value != "0")
+                return value;
+
+            // Only retry on non-timeout failures
+            if (attempt < maxRetries)
+                await Task.Delay(300);
+        }
+
+        return string.Empty;
     }
 
     #region Brightness (VCP Code 10)