[Build] Upgraded NetAnalyzers to 7.0.1 (#24792)

* upgraded NetAnalyzers to 7.0.1

* fix spellcheck

* Microsoft.CodeAnalysis.NetAnalyzers 7.0.1

* rebase and fix

.github/actions/spell-check/expect.txt

@@ -1853,6 +1853,7 @@ timeunion
 timeutil
 timezones
 Titlecase
+TKey
 TLayout
 tlb
 TMPVAR

Directory.Packages.props

@@ -18,7 +18,7 @@
     <PackageVersion Include="LazyCache" Version="2.4.0" />
     <PackageVersion Include="Mages" Version="2.0.1" />
     <PackageVersion Include="Markdig.Signed" Version="0.27.0" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="7.0.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="7.0.1" />
     <PackageVersion Include="Microsoft.Data.Sqlite" Version="7.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Hosting" Version="7.0.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />

NOTICE.md

@@ -289,7 +289,7 @@ SOFTWARE.
 - LazyCache 2.4.0
 - Mages 2.0.1
 - Markdig.Signed 0.27.0
-- Microsoft.CodeAnalysis.NetAnalyzers 7.0.0
+- Microsoft.CodeAnalysis.NetAnalyzers 7.0.1
 - Microsoft.Data.Sqlite 7.0.0
 - Microsoft.Extensions.Hosting 7.0.0
 - Microsoft.NET.Test.Sdk 17.4.1

src/common/AllExperiments/Experiments.cs

@@ -2,8 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-using System.Numerics;
+using System.Globalization;
-using System.Runtime.InteropServices;
 using System.Text.Json;
 using Microsoft.PowerToys.Settings.UI.Library.Telemetry.Events;
 using Microsoft.PowerToys.Telemetry;
@@ -13,8 +12,8 @@ using Windows.System.Profile;
 
 namespace AllExperiments
 {
-// The dependencies required to build this project are only available in the official build pipeline and are internal to Microsoft.
+    // The dependencies required to build this project are only available in the official build pipeline and are internal to Microsoft.
-// However, this project is not required to build a test version of the application.
+    // However, this project is not required to build a test version of the application.
     public class Experiments
     {
         public enum ExperimentState
@@ -25,7 +24,9 @@ namespace AllExperiments
         }
 
 #pragma warning disable SA1401 // Need to use LandingPageExperiment as a static property in OobeShellPage.xaml.cs
+#pragma warning disable CA2211 // Non-constant fields should not be visible
         public static ExperimentState LandingPageExperiment = ExperimentState.NotLoaded;
+#pragma warning restore CA2211
 #pragma warning restore SA1401
 
         public async Task<bool> EnableLandingPageExperimentAsync()
@@ -87,7 +88,7 @@ namespace AllExperiments
                         else
                         {
                             var jsonDataVersion = jsonDictionary["dataversion"].ToString();
-                            if (jsonDataVersion != null && int.Parse(jsonDataVersion) < dataVersion)
+                            if (jsonDataVersion != null && int.Parse(jsonDataVersion, CultureInfo.InvariantCulture) < dataVersion)
                             {
                                 jsonDictionary["dataversion"] = dataVersion;
                                 jsonDictionary["variantassignment"] = featureFlagValue;

src/common/AllExperiments/Microsoft.VariantAssignment/Client/VariantAssignmentServiceClient.cs

@@ -7,7 +7,7 @@ using Microsoft.VariantAssignment.Contract;
 // The goal of this class is to just mock out the Microsoft.VariantAssignment close source objects
 namespace Microsoft.VariantAssignment.Client
 {
-    internal partial class VariantAssignmentServiceClient<TServerResponse> : IVariantAssignmentProvider, IDisposable
+    internal sealed partial class VariantAssignmentServiceClient<TServerResponse> : IVariantAssignmentProvider, IDisposable
         where TServerResponse : VariantAssignmentServiceResponse
     {
         public void Dispose()

src/common/AllExperiments/Microsoft.VariantAssignment/Contract/EmptyVariantAssignmentResponse.cs

@@ -31,7 +31,13 @@ namespace Microsoft.VariantAssignment.Contract
         /// <inheritdoc/>
         public IReadOnlyList<IFeatureVariable> GetFeatureVariables(IReadOnlyList<string> prefix) => Array.Empty<IFeatureVariable>();
 
-        void IDisposable.Dispose()
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        protected virtual void Dispose(bool disposing)
         {
         }
 

src/common/AllExperiments/Microsoft.VariantAssignment/Contract/TreatmentAssignmentServiceResponse.cs

@@ -5,7 +5,7 @@
 // The goal of this class is to just mock out the Microsoft.VariantAssignment close source objects
 namespace Microsoft.VariantAssignment.Contract
 {
-    internal class TreatmentAssignmentServiceResponse : VariantAssignmentServiceResponse
+    internal sealed class TreatmentAssignmentServiceResponse : VariantAssignmentServiceResponse
     {
     }
 }

src/modules/Hosts/Hosts/Helpers/ExpressionExtensions.cs

@@ -23,7 +23,7 @@ namespace Hosts.Helpers
             return new ReplaceVisitor(searchEx, replaceEx).Visit(expression);
         }
 
-        internal class ReplaceVisitor : ExpressionVisitor
+        internal sealed class ReplaceVisitor : ExpressionVisitor
         {
             private readonly Expression _from;
             private readonly Expression _to;

src/modules/Hosts/Hosts/Helpers/NativeMethods.cs

@@ -7,7 +7,7 @@ using System.Runtime.InteropServices;
 
 namespace Hosts.Helpers
 {
-    internal class NativeMethods
+    internal sealed class NativeMethods
     {
         [DllImport("user32.dll", SetLastError = true)]
         internal static extern IntPtr SetForegroundWindow(IntPtr hWnd);

src/modules/Hosts/Hosts/ViewModels/MainViewModel.cs

@@ -328,8 +328,8 @@ namespace Hosts.ViewModels
         private void FindDuplicates(string address, IEnumerable<string> hosts)
         {
             var entries = _entries.Where(e =>
-                string.Equals(e.Address, address, StringComparison.InvariantCultureIgnoreCase)
+                string.Equals(e.Address, address, StringComparison.OrdinalIgnoreCase)
-                || hosts.Intersect(e.SplittedHosts, StringComparer.InvariantCultureIgnoreCase).Any());
+                || hosts.Intersect(e.SplittedHosts, StringComparer.OrdinalIgnoreCase).Any());
 
             foreach (var entry in entries)
             {
@@ -353,8 +353,8 @@ namespace Hosts.ViewModels
 
             var duplicate = _entries.FirstOrDefault(e => e != entry
                 && e.Type == entry.Type
-                && (string.Equals(e.Address, entry.Address, StringComparison.InvariantCultureIgnoreCase)
+                && (string.Equals(e.Address, entry.Address, StringComparison.OrdinalIgnoreCase)
-                    || hosts.Intersect(e.SplittedHosts, StringComparer.InvariantCultureIgnoreCase).Any())) != null;
+                    || hosts.Intersect(e.SplittedHosts, StringComparer.OrdinalIgnoreCase).Any())) != null;
 
             _dispatcherQueue.TryEnqueue(() =>
             {

src/modules/PowerOCR/PowerOCR/Helpers/ImageMethods.cs

@@ -24,7 +24,7 @@ using BitmapDecoder = Windows.Graphics.Imaging.BitmapDecoder;
 
 namespace PowerOCR;
 
-internal class ImageMethods
+internal sealed class ImageMethods
 {
     internal static ImageSource GetWindowBoundsImage(Window passedWindow)
     {

src/modules/PowerOCR/PowerOCR/Keyboard/EventMonitor.cs

@@ -12,7 +12,7 @@ namespace PowerOCR.Keyboard
     /// This class handles the interaction model when running from PowerToys Run.
     /// Handles activation through the event sent by the runner.
     /// </summary>
-    internal class EventMonitor
+    internal sealed class EventMonitor
     {
         public EventMonitor(System.Windows.Threading.Dispatcher dispatcher, System.Threading.CancellationToken exitToken)
         {

src/modules/PowerOCR/PowerOCR/Keyboard/GlobalKeyboardHook.cs

@@ -10,7 +10,7 @@ using static PowerOCR.OSInterop;
 
 namespace PowerOCR.Keyboard;
 
-internal class GlobalKeyboardHook : IDisposable
+internal sealed class GlobalKeyboardHook : IDisposable
 {
     private IntPtr _windowsHookHandle;
     private IntPtr _user32LibraryHandle;
@@ -39,7 +39,7 @@ internal class GlobalKeyboardHook : IDisposable
 
     internal event EventHandler<GlobalKeyboardHookEventArgs>? KeyboardPressed;
 
-    protected virtual void Dispose(bool disposing)
+    public void Dispose(bool disposing)
     {
         if (disposing)
         {

src/modules/PowerOCR/PowerOCR/Keyboard/GlobalKeyboardHookEventArgs.cs

@@ -7,7 +7,7 @@ using static PowerOCR.OSInterop;
 
 namespace PowerOCR.Keyboard;
 
-internal class GlobalKeyboardHookEventArgs : HandledEventArgs
+internal sealed class GlobalKeyboardHookEventArgs : HandledEventArgs
 {
     internal GlobalKeyboardHook.KeyboardState KeyboardState { get; private set; }
 

src/modules/PowerOCR/PowerOCR/OCROverlay.xaml.cs

@@ -35,7 +35,7 @@ public partial class OCROverlay : Window
 
     private Point GetMousePos() => PointToScreen(Mouse.GetPosition(this));
 
-    private Language? selectedLanguage = null;
+    private Language? selectedLanguage;
     private MenuItem cancelMenuItem;
 
     private System.Windows.Forms.Screen? CurrentScreen
@@ -70,8 +70,8 @@ public partial class OCROverlay : Window
         foreach (Language language in possibleOcrLanguages)
         {
             MenuItem menuItem = new MenuItem() { Header = language.NativeName, Tag = language, IsCheckable = true };
-            menuItem.IsChecked = language.DisplayName.Equals(selectedLanguageName);
+            menuItem.IsChecked = language.DisplayName.Equals(selectedLanguageName, StringComparison.Ordinal);
-            if (language.DisplayName.Equals(selectedLanguageName))
+            if (language.DisplayName.Equals(selectedLanguageName, StringComparison.Ordinal))
             {
                 selectedLanguage = language;
             }

src/modules/awake/Awake/Program.cs

@@ -7,6 +7,7 @@ using System.CommandLine;
 using System.CommandLine.Invocation;
 using System.Diagnostics;
 using System.Drawing;
+using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Reactive.Concurrency;
@@ -255,7 +256,7 @@ namespace Awake
                 {
                     try
                     {
-                        DateTime expirationDateTime = DateTime.Parse(expireAt);
+                        DateTime expirationDateTime = DateTime.Parse(expireAt, CultureInfo.CurrentCulture);
                         if (expirationDateTime > DateTime.Now)
                         {
                             // We want to have a dedicated expirable keep-awake logic instead of

src/modules/awake/Awake/Telemetry/AwakeNoKeepAwakeEvent.cs

@@ -9,7 +9,7 @@ using Microsoft.PowerToys.Telemetry.Events;
 namespace Awake.Telemetry
 {
     [EventData]
-    internal class AwakeNoKeepAwakeEvent : EventBase, IEvent
+    internal sealed class AwakeNoKeepAwakeEvent : EventBase, IEvent
     {
         public PartA_PrivTags PartA_PrivTags => PartA_PrivTags.ProductAndServiceUsage;
     }

src/modules/colorPicker/ColorPickerUI/ViewModels/ColorEditorViewModel.cs

@@ -246,9 +246,7 @@ namespace ColorPicker.ViewModels
                 new ColorFormatModel()
                 {
                     FormatName = ColorRepresentationType.HEX.ToString(),
-#pragma warning disable CA1304 // Specify CultureInfo
+                    Convert = (Color color) => ColorRepresentationHelper.GetStringRepresentationFromMediaColor(color, ColorRepresentationType.HEX.ToString()).ToLowerInvariant(),
-                    Convert = (Color color) => ColorRepresentationHelper.GetStringRepresentationFromMediaColor(color, ColorRepresentationType.HEX.ToString()).ToLower(),
-#pragma warning restore CA1304 // Specify CultureInfo
                 });
 
             _allColorRepresentations.Add(

src/modules/fancyzones/editor/FancyZonesEditor/CanvasZone.xaml.cs

@@ -159,7 +159,7 @@ namespace FancyZonesEditor
             public abstract void Move(int delta);
         }
 
-        private class SnappyHelperMagnetic : SnappyHelperBase
+        private sealed class SnappyHelperMagnetic : SnappyHelperBase
         {
             private List<int> magnetZoneSizes;
             private int freePosition;
@@ -220,7 +220,7 @@ namespace FancyZonesEditor
             }
         }
 
-        private class SnappyHelperNonMagnetic : SnappyHelperBase
+        private sealed class SnappyHelperNonMagnetic : SnappyHelperBase
         {
             public SnappyHelperNonMagnetic(IList<Int32Rect> zones, int zoneIndex, bool isX, ResizeMode mode, int screenAxisOrigin, int screenAxisSize)
                 : base(zones, zoneIndex, isX, mode, screenAxisOrigin, screenAxisSize)

src/modules/fancyzones/editor/FancyZonesEditor/Controls/CustomSliderAutomationPeer.cs

@@ -8,7 +8,7 @@ using System.Windows.Controls;
 
 namespace FancyZonesEditor.Controls
 {
-    internal class CustomSliderAutomationPeer : SliderAutomationPeer
+    internal sealed class CustomSliderAutomationPeer : SliderAutomationPeer
     {
         private string name = string.Empty;
 

src/modules/fancyzones/editor/FancyZonesEditor/Utils/FancyZonesEditorIO.cs

@@ -175,7 +175,7 @@ namespace FancyZonesEditor.Utils
         }
 
         // custom-layouts.json
-        private class CanvasInfoWrapper
+        private sealed class CanvasInfoWrapper
         {
             public struct CanvasZoneWrapper
             {
@@ -198,7 +198,7 @@ namespace FancyZonesEditor.Utils
         }
 
         // custom-layouts.json
-        private class GridInfoWrapper
+        private sealed class GridInfoWrapper
         {
             public int Rows { get; set; }
 

src/modules/fancyzones/editor/FancyZonesEditor/Utils/NativeMethods.cs

@@ -9,7 +9,7 @@ using System.Windows.Interop;
 
 namespace FancyZonesEditor.Utils
 {
-    internal class NativeMethods
+    internal sealed class NativeMethods
     {
         [DllImport("user32.dll", SetLastError = true)]
         private static extern int GetWindowLong(IntPtr hWnd, int nIndex);

src/modules/imageresizer/tests/Test/AssertEx.cs

@@ -75,7 +75,7 @@ namespace ImageResizer.Test
             return raisedEvent;
         }
 
-        public class RaisedEvent<TArgs>
+        public sealed class RaisedEvent<TArgs>
         {
             public RaisedEvent(object sender, TArgs args)
             {

src/modules/launcher/Plugins/Community.PowerToys.Run.Plugin.UnitConverter/Main.cs

@@ -62,7 +62,7 @@ namespace Community.PowerToys.Run.Plugin.UnitConverter
             return new Result
             {
                 ContextData = result,
-                Title = result.ToString(),
+                Title = result.ToString(null),
                 IcoPath = _icon_path,
                 Score = 300,
                 SubTitle = string.Format(CultureInfo.CurrentCulture, Properties.Resources.copy_to_clipboard, result.QuantityInfo.Name),

src/modules/launcher/Plugins/Community.PowerToys.Run.Plugin.VSCodeWorkspaces/SystemPath.cs

@@ -6,7 +6,7 @@ using System.Text.RegularExpressions;
 
 namespace Community.PowerToys.Run.Plugin.VSCodeWorkspaces
 {
-    internal class SystemPath
+    internal sealed class SystemPath
     {
         private static readonly Regex WindowsPath = new Regex(@"^([a-zA-Z]:)", RegexOptions.Compiled);
 

src/modules/launcher/Plugins/Microsoft.Plugin.Program/Programs/UWPApplication.cs

@@ -439,9 +439,9 @@ namespace Microsoft.Plugin.Program.Programs
                     paths.Add(path);
                 }
 
-                if (_scaleFactors.ContainsKey(Package.Version))
+                if (_scaleFactors.TryGetValue(Package.Version, out List<int> factors))
                 {
-                    foreach (var factor in _scaleFactors[Package.Version])
+                    foreach (var factor in factors)
                     {
                         if (highContrast)
                         {

src/modules/launcher/Plugins/Microsoft.PowerToys.Run.Plugin.System/Components/NetworkConnectionProperties.cs

@@ -17,7 +17,7 @@ namespace Microsoft.PowerToys.Run.Plugin.System.Components
     /// <summary>
     /// This class represents the informations for a network connection/interface
     /// </summary>
-    internal class NetworkConnectionProperties
+    internal sealed class NetworkConnectionProperties
     {
         /// <summary>
         /// Gets the name of the adapter

src/modules/launcher/Plugins/Microsoft.PowerToys.Run.Plugin.System/Components/SystemPluginContext.cs

@@ -4,7 +4,7 @@
 
 namespace Microsoft.PowerToys.Run.Plugin.System.Components
 {
-    internal class SystemPluginContext
+    internal sealed class SystemPluginContext
     {
         /// <summary>
         /// Gets or sets the type of the result

src/modules/launcher/Plugins/Microsoft.PowerToys.Run.Plugin.WindowsSettings/Classes/WindowsSetting.cs

@@ -9,7 +9,7 @@ namespace Microsoft.PowerToys.Run.Plugin.WindowsSettings
     /// <summary>
     /// A windows setting
     /// </summary>
-    internal class WindowsSetting
+    internal sealed class WindowsSetting
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="WindowsSetting"/> class.

src/modules/launcher/Plugins/Microsoft.PowerToys.Run.Plugin.WindowsSettings/Classes/WindowsSettings.cs

@@ -10,7 +10,7 @@ namespace Microsoft.PowerToys.Run.Plugin.WindowsSettings
     /// <summary>
     /// A class that contain all possible windows settings
     /// </summary>
-    internal class WindowsSettings
+    internal sealed class WindowsSettings
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="WindowsSettings"/> class with an empty settings list.

src/modules/launcher/PowerLauncher/CustomSearchBox.cs

@@ -9,7 +9,7 @@ using System.Windows.Controls;
 
 namespace PowerLauncher
 {
-    public class CustomSearchBox : TextBox
+    public sealed class CustomSearchBox : TextBox
     {
         public List<UIElement> ControlledElements { get; } = new List<UIElement>();
 
@@ -18,7 +18,7 @@ namespace PowerLauncher
             return new AutoSuggestTextBoxAutomationPeer(this);
         }
 
-        internal class AutoSuggestTextBoxAutomationPeer : TextBoxAutomationPeer
+        internal sealed class AutoSuggestTextBoxAutomationPeer : TextBoxAutomationPeer
         {
             public AutoSuggestTextBoxAutomationPeer(CustomSearchBox owner)
                 : base(owner)

src/modules/launcher/PowerLauncher/Helper/KeyboardHelper.cs

@@ -7,7 +7,7 @@ using Wox.Plugin;
 
 namespace PowerLauncher.Helper
 {
-    internal class KeyboardHelper
+    internal sealed class KeyboardHelper
     {
         public static SpecialKeyState CheckModifiers()
         {

src/modules/launcher/PowerLauncher/ReportWindow.xaml.cs

@@ -17,7 +17,7 @@ using Wox.Plugin.Logger;
 
 namespace PowerLauncher
 {
-    internal partial class ReportWindow
+    internal sealed partial class ReportWindow
     {
         private static readonly IFileSystem FileSystem = new FileSystem();
         private static readonly IFile File = FileSystem.File;

src/modules/launcher/PowerLauncher/SettingsReader.cs

@@ -269,9 +269,9 @@ namespace PowerLauncher
             var defaultOptions = defaultAdditionalOptions.ToDictionary(x => x.Key);
             foreach (var option in additionalOptions)
             {
-                if (option.Key != null && defaultOptions.ContainsKey(option.Key))
+                if (option.Key != null && defaultOptions.TryGetValue(option.Key, out PluginAdditionalOption defaultOption))
                 {
-                    defaultOptions[option.Key].Value = option.Value;
+                    defaultOption.Value = option.Value;
                 }
             }
 

src/modules/launcher/Wox.Infrastructure/Hotkey/HotkeyModel.cs

@@ -154,9 +154,7 @@ namespace Wox.Infrastructure.Hotkey
 
             if (CharKey != Key.None)
             {
-                text += _specialSymbolDictionary.ContainsKey(CharKey)
+                text += _specialSymbolDictionary.TryGetValue(CharKey, out string value) ? value : CharKey.ToString();
-                    ? _specialSymbolDictionary[CharKey]
-                    : CharKey.ToString();
             }
             else if (!string.IsNullOrEmpty(text))
             {

src/modules/launcher/Wox.Infrastructure/Image/ImageHashGenerator.cs

@@ -34,12 +34,7 @@ namespace Wox.Infrastructure.Image
                     enc.Frames.Add(bitmapFrame);
                     enc.Save(outStream);
                     var byteArray = outStream.GetBuffer();
-
+                    return Convert.ToBase64String(SHA1.HashData(byteArray));
-                    using (var sha1 = SHA1.Create())
-                    {
-                        var hash = Convert.ToBase64String(sha1.ComputeHash(byteArray));
-                        return hash;
-                    }
                 }
             }
             catch (System.Exception e)

src/modules/launcher/Wox.Plugin/Common/ShellLocalization.cs

@@ -25,9 +25,9 @@ namespace Wox.Plugin.Common
         public string GetLocalizedName(string path)
         {
             // Checking cache if path is already localized
-            if (_localizationCache.ContainsKey(path.ToLowerInvariant()))
+            if (_localizationCache.TryGetValue(path.ToLowerInvariant(), out string value))
             {
-                return _localizationCache[path.ToLowerInvariant()];
+                return value;
             }
 
             Guid shellItemType = ShellItemTypeConstants.ShellItemGuid;

src/modules/launcher/Wox.Plugin/UserSelectedRecord.cs

@@ -39,12 +39,8 @@ namespace Wox.Plugin
                 throw new ArgumentNullException(nameof(result));
             }
 
-            var key = result.ToString();
-            if (Records.ContainsKey(result.ToString()))
-            {
             Records.Remove(result.ToString());
         }
-        }
 
         public void Add(Result result)
         {

src/modules/launcher/Wox.Test/WoxTest.cs

@@ -14,7 +14,7 @@ namespace Wox.Test
     public class WoxTest
     {
         // A Dummy class to test that OnPropertyChanged() is called while we set the variable
-        private class DummyTestClass : BaseModel
+        private sealed class DummyTestClass : BaseModel
         {
             public bool IsFunctionCalled { get; set; }
 

src/modules/poweraccent/PowerAccent.Core/Languages.cs

@@ -2,9 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-using System;
 using PowerToys.PowerAccentKeyboardService;
-using Windows.Globalization;
 
 namespace PowerAccent.Core
 {
@@ -42,7 +40,7 @@ namespace PowerAccent.Core
         TK,
     }
 
-    internal class Languages
+    internal sealed class Languages
     {
         public static string[] GetDefaultLetterKey(LetterKey letter, Language lang)
         {

src/modules/poweraccent/PowerAccent.Core/Tools/CharactersUsageInfo.cs

@@ -34,6 +34,7 @@ namespace PowerAccent.Core.Tools
             return timestamp;
         }
 
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Performance", "CA1854:Prefer the 'IDictionary.TryGetValue(TKey, out TValue)' method", Justification = "False positive: https://github.com/dotnet/roslyn-analyzers/issues/6390")]
         public void IncrementUsageFrequency(string character)
         {
             if (_characterUsageCounters.ContainsKey(character))

src/modules/poweraccent/PowerAccent.UI/Selector.xaml.cs

@@ -17,7 +17,7 @@ public partial class Selector : Window, IDisposable, INotifyPropertyChanged
 
     private Visibility _characterNameVisibility = Visibility.Visible;
 
-    private int _selectedIndex = 0;
+    private int _selectedIndex;
 
     public event PropertyChangedEventHandler PropertyChanged;
 

src/modules/previewpane/UnitTests-PreviewHandlerCommon/FormHandlerControlTests.cs

@@ -13,7 +13,7 @@ namespace PreviewHandlerCommonUnitTests
     [TestClass]
     public class FormHandlerControlTests
     {
-        private class TestFormControl : FormHandlerControl
+        private sealed class TestFormControl : FormHandlerControl
         {
         }
 

src/modules/previewpane/common/cominterop/NativeMethods.cs

@@ -10,7 +10,7 @@ namespace PreviewHandlerCommon.ComInterop
     /// <summary>
     /// Interop methods
     /// </summary>
-    internal class NativeMethods
+    internal sealed class NativeMethods
     {
         /// <summary>
         /// Changes the parent window of the specified child window.

src/modules/previewpane/common/controls/FormHandlerControl.cs

@@ -73,7 +73,7 @@ namespace Common
         }
 
         /// <inheritdoc />
-        public void SetRect(Rectangle rect)
+        public void SetRect(Rectangle windowBounds)
         {
             this.UpdateWindowBounds(parentHwnd);
         }

src/settings-ui/Settings.UI.Library/HotkeySettingsControlHook.cs

@@ -60,7 +60,9 @@ namespace Microsoft.PowerToys.Settings.UI.Library
 
         private bool FilterKeyboardEvents(KeyboardEvent ev)
         {
+#pragma warning disable CA2020 // Prevent from behavioral change
             return _filterKeyboardEvent(ev.key, (UIntPtr)ev.dwExtraInfo);
+#pragma warning restore CA2020 // Prevent from behavioral change
         }
 
         protected virtual void Dispose(bool disposing)

src/settings-ui/Settings.UI.Library/SettingsBackupAndRestoreUtils.cs

@@ -46,7 +46,7 @@ namespace Microsoft.PowerToys.Settings.UI.Library
             }
         }
 
-        private class JsonMergeHelper
+        private sealed class JsonMergeHelper
         {
             // mostly from https://stackoverflow.com/questions/58694837/system-text-json-merge-two-objects
             // but with some update to prevent array item duplicates
@@ -308,10 +308,10 @@ namespace Microsoft.PowerToys.Settings.UI.Library
                     var retoreFullPath = Path.Combine(appBasePath, relativePath);
                     var settingsToRestoreJson = GetExportVersion(backupRetoreSettings, currentFile.Key, currentFile.Value);
 
-                    if (currentSettingsFiles.ContainsKey(currentFile.Key))
+                    if (currentSettingsFiles.TryGetValue(currentFile.Key, out string value))
                     {
                         // we have a setting file to restore to
-                        var currentSettingsFileJson = GetExportVersion(backupRetoreSettings, currentFile.Key, currentSettingsFiles[currentFile.Key]);
+                        var currentSettingsFileJson = GetExportVersion(backupRetoreSettings, currentFile.Key, value);
 
                         if (JsonNormalizer.Normalize(settingsToRestoreJson) != JsonNormalizer.Normalize(currentSettingsFileJson))
                         {
@@ -659,10 +659,10 @@ namespace Microsoft.PowerToys.Settings.UI.Library
                         var currentSettingsFileToBackup = GetExportVersion(backupRetoreSettings, currentFile.Key, currentFile.Value);
 
                         var doBackup = false;
-                        if (lastBackupSettingsFiles.ContainsKey(currentFile.Key))
+                        if (lastBackupSettingsFiles.TryGetValue(currentFile.Key, out string value))
                         {
                             // there is a previous backup for this, get an export version of it.
-                            var lastSettingsFileDoc = GetExportVersion(backupRetoreSettings, currentFile.Key, lastBackupSettingsFiles[currentFile.Key]);
+                            var lastSettingsFileDoc = GetExportVersion(backupRetoreSettings, currentFile.Key, value);
 
                             // check to see if the new export version would be same as last export version.
                             if (JsonNormalizer.Normalize(currentSettingsFileToBackup) != JsonNormalizer.Normalize(lastSettingsFileDoc))
@@ -989,7 +989,7 @@ namespace Microsoft.PowerToys.Settings.UI.Library
         /// Class <c>JsonNormalizer</c> is a utility class to 'normalize' a JSON file so that it can be compared to another JSON file.
         /// This really just means to fully sort it. This does not work for any JSON file where the order of the node is relevant.
         /// </summary>
-        private class JsonNormalizer
+        private sealed class JsonNormalizer
         {
             public static string Normalize(string json)
             {

src/settings-ui/Settings.UI.UnitTests/BackwardsCompatibility/BackCompatTestProperties.cs

@@ -20,7 +20,7 @@ namespace Microsoft.PowerToys.Settings.UI.UnitTests.BackwardsCompatibility
         // Using Ordinal since this is used internally for a path
         private static readonly Expression<Func<string, bool>> SettingsFilterExpression = s => s == null || s.Contains("Microsoft\\PowerToys\\settings.json", StringComparison.Ordinal);
 
-        internal class MockSettingsRepository<T> : ISettingsRepository<T>
+        internal sealed class MockSettingsRepository<T> : ISettingsRepository<T>
             where T : ISettingsConfig, new()
         {
             private readonly ISettingsUtils _settingsUtils;

src/settings-ui/Settings.UI.UnitTests/ModelsTests/SettingsUtilsTests.cs

@@ -100,7 +100,7 @@ namespace CommonLibTest
               .Select(s => s[random.Next(s.Length)]).ToArray());
         }
 
-        private partial class TestClass : ISettingsConfig
+        private sealed partial class TestClass : ISettingsConfig
         {
             public int TestInt { get; set; } = 100;
 

src/settings-ui/Settings.UI.UnitTests/ViewModelTests/PowerLauncherViewModelTest.cs

@@ -14,7 +14,7 @@ namespace ViewModelTests
     [TestClass]
     public class PowerLauncherViewModelTest
     {
-        private class SendCallbackMock
+        private sealed class SendCallbackMock
         {
             public int TimesSent { get; set; }
 

src/settings-ui/Settings.UI/Activation/DefaultActivationHandler.cs

@@ -9,7 +9,7 @@ using Windows.ApplicationModel.Activation;
 
 namespace Microsoft.PowerToys.Settings.UI.Activation
 {
-    internal class DefaultActivationHandler : ActivationHandler<IActivatedEventArgs>
+    internal sealed class DefaultActivationHandler : ActivationHandler<IActivatedEventArgs>
     {
         private readonly Type navElement;
 

src/settings-ui/Settings.UI/App.xaml.cs

@@ -163,8 +163,8 @@ namespace Microsoft.PowerToys.Settings.UI
                 if (containsFlyoutPosition)
                 {
                     // get the flyout position arguments
-                    int.TryParse(cmdArgs[currentArgumentIndex++], out flyout_x);
+                    _ = int.TryParse(cmdArgs[currentArgumentIndex++], out flyout_x);
-                    int.TryParse(cmdArgs[currentArgumentIndex++], out flyout_y);
+                    _ = int.TryParse(cmdArgs[currentArgumentIndex++], out flyout_y);
                 }
 
                 RunnerHelper.WaitForPowerToysRunner(PowerToysPID, () =>

src/settings-ui/Settings.UI/Helpers/Utils.cs

@@ -9,7 +9,7 @@ using System.Text.Json;
 
 namespace Microsoft.PowerToys.Settings.UI.Helpers
 {
-    internal class Utils
+    internal sealed class Utils
     {
         private static string _placementPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), @"Microsoft\PowerToys\settings-placement.json");
 

src/settings-ui/Settings.UI/OOBE/Views/OobeWhatsNew.xaml.cs

@@ -25,7 +25,7 @@ namespace Microsoft.PowerToys.Settings.UI.OOBE.Views
     public sealed partial class OobeWhatsNew : Page
     {
         // Contains information for a release. Used to deserialize release JSON info from GitHub.
-        private class PowerToysReleaseInfo
+        private sealed class PowerToysReleaseInfo
         {
             [JsonPropertyName("published_at")]
             public DateTimeOffset PublishedDate { get; set; }

src/settings-ui/Settings.UI/Services/ActivationService.cs

@@ -15,7 +15,7 @@ namespace Microsoft.PowerToys.Settings.UI.Services
 {
     // For more information on understanding and extending activation flow see
     // https://github.com/Microsoft/WindowsTemplateStudio/blob/master/docs/activation.md
-    internal class ActivationService
+    internal sealed class ActivationService
     {
         private readonly App app;
         private readonly Type defaultNavItem;

src/settings-ui/Settings.UI/ViewModels/ColorPickerViewModel.cs

@@ -241,7 +241,7 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
             {
                 // skip entries with empty name or duplicated name, it should never occur
                 string storedName = storedColorFormat.Key;
-                if (storedName == string.Empty || ColorFormats.Count(x => x.Name.ToUpperInvariant().Equals(storedName.ToUpperInvariant(), StringComparison.Ordinal)) > 0)
+                if (storedName == string.Empty || ColorFormats.Any(x => x.Name.ToUpperInvariant().Equals(storedName.ToUpperInvariant(), StringComparison.Ordinal)))
                 {
                     continue;
                 }

src/settings-ui/Settings.UI/ViewModels/Flyout/FlyoutMenuItem.cs

@@ -36,7 +36,7 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
             }
         }
 
-        public Action<FlyoutMenuItem> EnabledChangedCallback { get; set; } = null;
+        public Action<FlyoutMenuItem> EnabledChangedCallback { get; set; }
 
         public bool Visible
         {

src/settings-ui/Settings.UI/ViewModels/Flyout/FlyoutViewModel.cs

@@ -2,6 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using System;
 using System.ComponentModel;
 using System.Runtime.CompilerServices;
 using System.Timers;
@@ -9,8 +10,11 @@ using Microsoft.PowerToys.Settings.UI.Library.Utilities;
 
 namespace Microsoft.PowerToys.Settings.UI.ViewModels.Flyout
 {
-    public class FlyoutViewModel
+    public class FlyoutViewModel : IDisposable
     {
+        private Timer _hideTimer;
+        private bool _disposed;
+
         public bool CanHide { get; set; }
 
         private bool _windows10;
@@ -28,29 +32,27 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels.Flyout
             }
         }
 
-        private Timer hideTimer;
-
         public FlyoutViewModel()
         {
             CanHide = true;
-            hideTimer = new Timer();
+            _hideTimer = new Timer();
-            hideTimer.Elapsed += HideTimer_Elapsed;
+            _hideTimer.Elapsed += HideTimer_Elapsed;
-            hideTimer.Interval = 1000;
+            _hideTimer.Interval = 1000;
-            hideTimer.Enabled = false;
+            _hideTimer.Enabled = false;
             _windows10 = !Helper.Windows11();
         }
 
         private void HideTimer_Elapsed(object sender, ElapsedEventArgs e)
         {
             CanHide = true;
-            hideTimer.Stop();
+            _hideTimer.Stop();
         }
 
         internal void DisableHiding()
         {
             CanHide = false;
-            hideTimer.Stop();
+            _hideTimer.Stop();
-            hideTimer.Start();
+            _hideTimer.Start();
         }
 
         public event PropertyChangedEventHandler PropertyChanged;
@@ -59,5 +61,23 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels.Flyout
         {
             PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
         }
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (!_disposed)
+            {
+                if (disposing)
+                {
+                    _hideTimer?.Dispose();
+                    _disposed = true;
+                }
+            }
+        }
     }
 }

src/settings-ui/Settings.UI/ViewModels/PowerOcrViewModel.cs

@@ -178,12 +178,12 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
             AvailableLanguages.Clear();
             foreach (Language language in possibleOcrLanguages)
             {
-                if (_powerOcrSettings.Properties.PreferredLanguage?.Equals(language.DisplayName) == true)
+                if (_powerOcrSettings.Properties.PreferredLanguage?.Equals(language.DisplayName, StringComparison.Ordinal) == true)
                 {
                     preferredLanguageIndex = AvailableLanguages.Count;
                 }
 
-                if (systemCulture.DisplayName.Equals(language.DisplayName) || systemCulture.Parent.DisplayName.Equals(language.DisplayName))
+                if (systemCulture.DisplayName.Equals(language.DisplayName, StringComparison.Ordinal) || systemCulture.Parent.DisplayName.Equals(language.DisplayName, StringComparison.Ordinal))
                 {
                     systemLanguageIndex = AvailableLanguages.Count;
                 }

src/settings-ui/Settings.UI/Views/AwakePage.xaml.cs

@@ -100,7 +100,7 @@ namespace Microsoft.PowerToys.Settings.UI.Views
                         string csMessage = csIpcMessage.ToJsonString();
                         string outMessage = outIpcMessage.ToJsonString();
 
-                        if (!csMessage.Equals(outMessage))
+                        if (!csMessage.Equals(outMessage, StringComparison.Ordinal))
                         {
                             Logger.LogInfo($"Saved Awake settings from Awake page.");
                             _sendConfigMsg(outMessage);

src/settings-ui/Settings.UI/Views/ShellPage.xaml.cs

@@ -333,7 +333,7 @@ namespace Microsoft.PowerToys.Settings.UI.Views
                 IJsonValue whatToShowJson;
                 if (json.TryGetValue("ShowYourself", out whatToShowJson))
                 {
-                    if (whatToShowJson.ValueType == JsonValueType.String && whatToShowJson.GetString().Equals("flyout"))
+                    if (whatToShowJson.ValueType == JsonValueType.String && whatToShowJson.GetString().Equals("flyout", StringComparison.Ordinal))
                     {
                         POINT? p = null;
 
@@ -351,7 +351,7 @@ namespace Microsoft.PowerToys.Settings.UI.Views
 
                         OpenFlyoutCallback(p);
                     }
-                    else if (whatToShowJson.ValueType == JsonValueType.String && whatToShowJson.GetString().Equals("main_page"))
+                    else if (whatToShowJson.ValueType == JsonValueType.String && whatToShowJson.GetString().Equals("main_page", StringComparison.Ordinal))
                     {
                         OpenMainWindowCallback();
                     }