9️⃣ Upgrade to .NET 9

Author: database64128

.github/workflows/build.yml

@@ -47,22 +47,22 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: youtube-dl-wpf-${{ github.sha }}-windows
-          path: YoutubeDl.Wpf/bin/Release/net8.0-windows10.0.22621.0/publish/
+          path: YoutubeDl.Wpf/bin/Release/net9.0-windows10.0.26100.0/publish/
 
       - name: Upload artifacts for Windows ARM64
         uses: actions/upload-artifact@v4
         with:
           name: youtube-dl-wpf-${{ github.sha }}-windows-arm64
-          path: YoutubeDl.Wpf/bin/Release/net8.0-windows10.0.22621.0/win-arm64/publish/
+          path: YoutubeDl.Wpf/bin/Release/net9.0-windows10.0.26100.0/win-arm64/publish/
 
       - name: Upload artifacts for Windows x64
         uses: actions/upload-artifact@v4
         with:
           name: youtube-dl-wpf-${{ github.sha }}-windows-x64
-          path: YoutubeDl.Wpf/bin/Release/net8.0-windows10.0.22621.0/win-x64/publish/
+          path: YoutubeDl.Wpf/bin/Release/net9.0-windows10.0.26100.0/win-x64/publish/
 
       - name: Upload artifacts for Windows x86
         uses: actions/upload-artifact@v4
         with:
           name: youtube-dl-wpf-${{ github.sha }}-windows-x86
-          path: YoutubeDl.Wpf/bin/Release/net8.0-windows10.0.22621.0/win-x86/publish/
+          path: YoutubeDl.Wpf/bin/Release/net9.0-windows10.0.26100.0/win-x86/publish/

.github/workflows/release.yml

@@ -32,7 +32,7 @@ jobs:
       # Package
       - name: Package for Windows
         run: |
-          cd YoutubeDl.Wpf/bin/Release/net8.0-windows10.0.22621.0/publish
+          cd YoutubeDl.Wpf/bin/Release/net9.0-windows10.0.26100.0/publish
           7z a -tzip -mx=9 -mfb=128 ../youtube-dl-wpf-${{ github.ref_name }}-windows.zip .
           7z a -t7z -m0=lzma2 -mx=9 -mfb=64 -md=64m -ms=on ../youtube-dl-wpf-${{ github.ref_name }}-windows.7z .
           cd ../win-arm64/publish
@@ -50,7 +50,7 @@ jobs:
         uses: svenstaro/upload-release-action@v2
         with:
           repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: YoutubeDl.Wpf/bin/Release/net8.0-windows10.0.22621.0/youtube-dl-wpf-*
+          file: YoutubeDl.Wpf/bin/Release/net9.0-windows10.0.26100.0/youtube-dl-wpf-*
           tag: ${{ github.ref }}
           file_glob: true
           prerelease: true

.vscode/launch.json

@@ -6,9 +6,9 @@
             "type": "coreclr",
             "request": "launch",
             "preLaunchTask": "Build Solution (Debug)",
-            "program": "${workspaceFolder}/YoutubeDl.Wpf/bin/Debug/net5.0/youtube-dl-wpf.dll",
+            "program": "${workspaceFolder}/YoutubeDl.Wpf/bin/Debug/net9.0-windows10.0.26100.0/youtube-dl-wpf.dll",
             "args": [],
-            "cwd": "${workspaceFolder}/YoutubeDl.Wpf/bin/Debug/net5.0",
+            "cwd": "${workspaceFolder}/YoutubeDl.Wpf/bin/Debug/net9.0-windows10.0.26100.0",
             "stopAtEntry": false,
             "console": "integratedTerminal"
         },

README.md

@@ -62,7 +62,7 @@ WPF GUI for [youtube-dl](https://github.com/ytdl-org/youtube-dl) and [yt-dlp](ht
 
 ## Build
 
-Prerequisites: .NET 8 SDK
+Prerequisites: .NET 9 SDK
 
 Note for packagers: The application by default uses executable directory as config directory. To use user's config directory, define the constant `PACKAGED` when building.
 
@@ -99,4 +99,4 @@ dotnet publish YoutubeDl.Wpf -c Release -p:DefineConstants=PACKAGED -r win-x64 -
 - [Roboto Mono](https://fonts.google.com/specimen/Roboto+Mono) is licensed under the [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0).
 - [ReactiveUI](https://github.com/reactiveui/ReactiveUI) and its dependencies are licensed under [MIT](https://github.com/reactiveui/ReactiveUI/blob/main/LICENSE).
 
-© 2024 database64128
+© 2025 database64128

YoutubeDl.Wpf.Tests/YoutubeDl.Wpf.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0-windows10.0.22621.0</TargetFramework>
+    <TargetFramework>net9.0-windows10.0.26100.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
 

YoutubeDl.Wpf/Models/ObservableSettings.cs

@@ -29,13 +29,13 @@ public class ObservableSettings(Settings settings) : ReactiveObject
     /// Gets or sets the list of arguments passed
     /// to the backend process for all types of operations.
     /// </summary>
-    public ObservableCollection<BackendArgument> BackendGlobalArguments { get; set; } = new(settings.BackendGlobalArguments);
+    public ObservableCollection<BackendArgument> BackendGlobalArguments { get; set; } = [.. settings.BackendGlobalArguments];
 
     /// <summary>
     /// Gets or sets the list of arguments passed
     /// to the backend process for download operations.
     /// </summary>
-    public List<BackendArgument> BackendDownloadArguments { get; set; } = new(settings.BackendDownloadArguments);
+    public List<BackendArgument> BackendDownloadArguments { get; set; } = [.. settings.BackendDownloadArguments];
 
     [Reactive]
     public bool BackendAutoUpdate { get; set; } = settings.BackendAutoUpdate;
@@ -63,7 +63,7 @@ public class ObservableSettings(Settings settings) : ReactiveObject
     [Reactive]
     public string SelectedPresetText { get; set; } = settings.SelectedPreset.DisplayName;
 
-    public List<Preset> CustomPresets { get; set; } = new(settings.CustomPresets);
+    public List<Preset> CustomPresets { get; set; } = [.. settings.CustomPresets];
 
     [Reactive]
     public bool AddMetadata { get; set; } = settings.AddMetadata;
@@ -93,7 +93,7 @@ public class ObservableSettings(Settings settings) : ReactiveObject
     /// Gets the list of used output templates.
     /// New templates are appended to the list.
     /// </summary>
-    public List<string> OutputTemplateHistory { get; } = new(settings.OutputTemplateHistory);
+    public List<string> OutputTemplateHistory { get; } = [.. settings.OutputTemplateHistory];
 
     [Reactive]
     public bool UseCustomPath { get; set; } = settings.UseCustomPath;
@@ -105,7 +105,7 @@ public class ObservableSettings(Settings settings) : ReactiveObject
     /// Gets the list of used download paths.
     /// New paths are appended to the list.
     /// </summary>
-    public List<string> DownloadPathHistory { get; } = new(settings.DownloadPathHistory);
+    public List<string> DownloadPathHistory { get; } = [.. settings.DownloadPathHistory];
 
     public void UpdateAppSettings()
     {

YoutubeDl.Wpf/Models/QueuedTextBoxSink.cs

@@ -5,12 +5,13 @@
 using System;
 using System.Collections.Generic;
 using System.Reactive.Concurrency;
+using System.Threading;
 
 namespace YoutubeDl.Wpf.Models;
 
 public class QueuedTextBoxSink(Settings settings, IFormatProvider? formatProvider = null) : ReactiveObject, ILogEventSink
 {
-    private readonly object _locker = new();
+    private readonly Lock _lock = new();
     private readonly Queue<string> _queuedLogMessages = new(settings.LoggingMaxEntries);
     private int _contentLength;
 
@@ -54,7 +55,7 @@ public void Emit(LogEvent logEvent)
             Environment.NewLine.CopyTo(buf[(34 + renderedMessage.Length)..]);
         });
 
-        lock (_locker)
+        lock (_lock)
         {
             while (_queuedLogMessages.Count >= settings.LoggingMaxEntries)
             {

YoutubeDl.Wpf/ViewModels/HomeViewModel.cs

@@ -125,12 +125,13 @@ public HomeViewModel(ObservableSettings settings, BackendService backendService,
                     Presets.AddRange(Preset.PredefinedPresets.Where(x => (x.SupportedBackends & SharedSettings.Backend) == SharedSettings.Backend));
                 });
 
-            OutputTemplateHistory = new(SharedSettings.OutputTemplateHistory.Select(x => new HistoryItemViewModel(x, DeleteOutputTemplateItem)).Reverse());
-            DownloadPathHistory = new(SharedSettings.DownloadPathHistory.Select(x => new HistoryItemViewModel(x, DeleteDownloadPathItem)).Reverse());
-            DownloadArguments = new(SharedSettings.BackendDownloadArguments.Select(x => new ArgumentChipViewModel(x, true, DeleteArgumentChip)))
-            {
+            OutputTemplateHistory = [.. SharedSettings.OutputTemplateHistory.Select(x => new HistoryItemViewModel(x, DeleteOutputTemplateItem)).Reverse()];
+            DownloadPathHistory = [.. SharedSettings.DownloadPathHistory.Select(x => new HistoryItemViewModel(x, DeleteDownloadPathItem)).Reverse()];
+            DownloadArguments =
+            [
+                .. SharedSettings.BackendDownloadArguments.Select(x => new ArgumentChipViewModel(x, true, DeleteArgumentChip)),
                 new AddArgumentViewModel(AddArgument),
-            };
+            ];
 
             var gdaA = this.WhenAnyValue(
                 x => x.SharedSettings.Backend,

YoutubeDl.Wpf/ViewModels/PresetDialogViewModel.cs

@@ -144,7 +144,7 @@ private Preset ToPreset()
             FormatArg = string.IsNullOrEmpty(FormatArg) ? null : FormatArg,
             ContainerArg = string.IsNullOrEmpty(ContainerArg) ? null : ContainerArg,
             SupportedBackends = supportedBackends,
-            ExtraArgs = _backendArguments.Select(x => x.Argument).ToArray(),
+            ExtraArgs = [.. _backendArguments.Select(x => x.Argument)],
         };
     }
 

YoutubeDl.Wpf/YoutubeDl.Wpf.csproj

@@ -2,15 +2,15 @@
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net8.0-windows10.0.22621.0</TargetFramework>
+    <TargetFramework>net9.0-windows10.0.26100.0</TargetFramework>
     <UseWPF>true</UseWPF>
     <ApplicationManifest>app.manifest</ApplicationManifest>
     <Product>Cube YouTube Downloader</Product>
     <Authors>database64128</Authors>
     <Version>1.13.0</Version>
     <ApplicationIcon>CubeYouTubeDownloader.ico</ApplicationIcon>
     <Description>WPF GUI for https://github.com/ytdl-org/youtube-dl and https://github.com/yt-dlp/yt-dlp.</Description>
-    <Copyright>© 2024 database64128</Copyright>
+    <Copyright>© 2025 database64128</Copyright>
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
     <PackageProjectUrl>https://github.com/database64128/youtube-dl-wpf</PackageProjectUrl>
     <PackageIcon>CubeYouTubeDownloader.png</PackageIcon>