CommunityToolkit.Mvvm

v8.4.1

This package includes a .NET MVVM library with helpers such as: - ObservableObject: a base class for objects implementing the INotifyPropertyChanged interface. - ObservableRecipient: a base class for observable objects with support for the IMessenger service. - ObservableValidator: a base class for objects implementing the INotifyDataErrorInfo interface. - RelayCommand: a simple delegate command implementing the ICommand interface. - AsyncRelayCommand: a delegate command supporting asynchronous operations and cancellation. - WeakReferenceMessenger: a messaging system to exchange messages through different loosely-coupled objects. - StrongReferenceMessenger: a high-performance messaging system that trades weak references for speed. - Ioc: a helper class to configure dependency injection service containers.

dotnetfoundation Microsoft.Toolkit

dotnet Community Toolkit .NET MVVM MVVMToolkit INotifyPropertyChanged Observable IOC DI Dependency Injection Object Messaging Extensions Helpers

NuGet Stats Changelog

Total Downloads

24.9M

24,910,376

Published

Mar 18, 2026

Latest stable version

Install

.NET CLI

dotnet add package CommunityToolkit.Mvvm --version 8.4.1

Package Manager Console

Install-Package CommunityToolkit.Mvvm -Version 8.4.1

PackageReference

<PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.1" />

Frameworks

net8.0 net8.0-windows10.0.17763 .NETStandard2.0 .NETStandard2.1

Dependencies

Microsoft.Bcl.AsyncInterfaces

.NETStandard2.0

[10.0.1, )

System.ComponentModel.Annotations

.NETStandard2.0

[5.0.0, )

System.Memory

.NETStandard2.0

[4.6.3, )

System.Runtime.CompilerServices.Unsafe

.NETStandard2.0

[6.1.2, )

System.ComponentModel.Annotations

.NETStandard2.1

[5.0.0, )

System.Runtime.CompilerServices.Unsafe

.NETStandard2.1

[6.1.2, )

Adoption guide

A verified publisher signal is available. Assess fit from the package's supported frameworks, license and dependency graph rather than popularity alone.

Compatibility metadata lists 4 target frameworks; confirm the exact target used by your application.

How to read this guidance

Sources: published NuGet v3 registry metadata and explicit NuBrowse editorial guides. Refresh: package metadata is refreshed from NuGet when the page loads. Limit: this is not a security, legal or compatibility guarantee; validate the selected version in your project.

Useful next steps

Move from package metadata to a concrete selection or review workflow.

Audit NuGet dependencies in a .NET project Review NuGet licenses before shipping