By Abdul Jabbar | News Wire
The .NET Community Toolkit has unveiled version 8.4, bringing a host of exciting updates aimed at enhancing developer productivity and streamlining workflows. Among the standout features is the support for partial properties in the MVVM Toolkit, made possible by advancements in the C# language with the .NET 9 SDK.
Partial properties offer greater flexibility by enabling the use of modifiers like new, sealed, override, and required in property declarations. Developers can now also apply custom attributes and set specific accessibility levels to properties, fields, or accessors. This improvement enhances compatibility with nullability annotations and ensures smoother integration with Native AOT for UWP and WinUI 3 applications. A forthcoming Visual Studio update is set to further simplify navigation between partial property declarations and implementations.
To ease the adoption of partial properties, a new Visual Studio code fixer enables developers to migrate existing [ObservableProperty] fields effortlessly. This one-click migration is particularly beneficial for projects leveraging CsWinRT, offering better performance and expanded language feature support.
The update also introduces additional diagnostic analyzers for the MVVM Toolkit. These analyzers address frequent coding errors, such as improper declarations or unsupported types, and help maintain high code quality. Notable new analyzers include checks for language version compatibility, AOT readiness for WinRT scenarios, and the correct use of [ObservableProperty] and [RelayCommand]. Developers are encouraged to use <LangVersion>preview</LangVersion> in their project files to fully leverage the new features.
Beyond MVVM, the release includes numerous other improvements. Highlights include better Windows SDK version validation, attribute forwarding for property accessors, and embedded .pdb files to simplify debugging. Performance optimizations have also been applied to various components of the toolkit.
Additional features include a new AsStream() extension for ReadOnlySequence<byte>, allowing for efficient creation of readonly, seekable streams, and improvements to the IndexOf<T> extension, which now employs ref readonly for enhanced clarity in usage.
The .NET Community Toolkit team invites developers to explore these updates and provide feedback to help shape future releases. For more details, comprehensive documentation is available in the official release notes.
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