8.0.0

Breaking changes (since 7.1.x) 💥

• #292: Add FlowExceptionsToTaskScheduler command option
• #288: Rename attributes, enable class-level support
  • [AlsoNotifyChangeFor] ---> [NotifyPropertyChangedFor]
  • [AlsoNotifyCanExecuteFor] ---> [NotifyCanExecuteChangedFor]
  • [AlsoValidateProperty] ---> [NotifyDataErrorInfo]
  • [AlsoBroadcastChange] ---> [NotifyPropertyChangeRecipients]
  • [ICommand] ---> [RelayCommand]
• #248: Block [ObservableProperty] on properties causing conflicts
• #267: property validation is now opt-in, and [NotifyDataErrorInfo] is needed
• #169: Revamp observable collection APIs
• #183: Remove SpinLock extension taking an object
• #190: Change IndexOf APIs to return -1 if not found
• #173: Remove obsolete APIs
• #151: Move collection types to MVVM Toolkit
• #131: Remove CanExecute checks from Execute logic
• #113: Propagate task exceptions to TaskScheduler.UnobservedTaskException
• #127: Switch async commands to default to no concurrent execution
• #79: Add [RequiresPreviewFeatures] to unsafe APIs (HighPerformance)
• #77: Strip source generator attributes by default (MVVM Toolkit)
• #63: Switch source generators to incremental generators (MVVM Toolkit)
• #60: Add null checks for parameters of public APIs (MVVM Toolkit)
• #42: Switch .NET 5 target to .NET 6
• Remove .NET Standard 1.4, .NET Core 2.1 and .NET 5 targets.
• Switch setters in attribute properties to init-only. (MVVM Toolkit)
• Move NullabilityExtensions to CommunityToolkit.HighPerformance namespace. (HighPerformance)

Improvements (since 7.1.x) ✨

• #285: Properly forward nullability annotations for [ICommand]
• #277: Add diagnostic for duplicate ICommand-s in base types
• #279: Add support for "On" prefix for command methods
• #284: Use ".g.cs" extension for all generated files
• #267: Add [AlsoValidateProperty] attribute
• #181: Fix [ICommand] generator crashing with overloads, add diagnostics
• #161: Allow Task-returns on methods with [ICommand]
• #179: Make NullabilityAttributesGenerator incremental
• #141: Extend source generator diagnostics in several scenarios
• #119: [ObservableProperty] generates partial OnPropertyChanging/Changed methods
• #128: Add cancel command support
• #135: Add [DynamicallyAccessedMembers] annotations
• #122: Fix async command event notifications
• #124: Add to generated observable properties
• #64: Add NullableExtensions.DangerousGetValueOrNullReference (HighPerformance)
• #30: Add concurrency control to AsyncRelayCommand types (MVVM Toolkit)
• #48: Enable INotifyPropertyChanging AppContext switch (MVVM Toolkit)
• #50: Add [ICommand] CanExecute property (MVVM Toolkit)
• #29: Add [CallerArgumentExpression] to Guard APIs (Diagnostics)
• #66: Add vectorized Count support for nint/nuint (HighPerformance)
• #70: Add interpolated handler overload for Guard.IsTrue/IsFalse (Diagnostics)
• #53: Add [AlsoNotifyCanExecuteFor] attribute (MVVM Toolkit)
• #78: Remove class constraint from Guard.Is[Not]Null APIs (Diagnostics)
• #76: Add trimming support
• #68: Add [StackTraceHidden] attribute to internal ThrowHelper type (Diagnostics)
• #69: Remove [Pure] attribute usages
• #67: Add missing trailing dot to exception messages (Diagnostics)
• #47: Switch all generated code to global:: (MVVM Toolkit)
• #31: Improve header for generated files (MVVM Toolkit)
• #59: Optimize StrongReferenceMessenger (MVVM Toolkit)
• #44: Optimize WeakReferenceMessenger (MVVM Toolkit)

NOTE: for a full list of all changes in past previews, see the changelog for 8.0.0 Preview1-4.

What's Changed (since 8.0.0-Preview4) 🆕

• Update EditorConfig and Git files by @Nirmal4G in #304
• Add missing trimming annotations by @Sergio0694 in #310
• Add "this." prefix to all field accesses by @Sergio0694 in #309
• Add unique prefixes to all .targets properties and items by @Sergio0694 in #321
• Improve exceptions for invalid command arguments by @Sergio0694 in #301
• Fix [RelayCommand] CanExecute when nullable arguments are used by @Sergio0694 in #302
• Add aka.ms links to MVVM generator diagnostics by @Sergio0694 in #326
• Asynchronous implementation of MemorySource<TSource>.CopyToAsync by @OronDF343 in #266
• Replace linker suppressions with attributes by @Sergio0694 in #359

New Contributors

• @OronDF343 made their first contribution in #266

Full Changelog: v8.0.0-preview4...v8.0.0