System.Composition 9.0.3

Prefix Reserved
There is a newer version of this package available.
See the version list below for details.
dotnet add package System.Composition --version 9.0.3
                    
NuGet\Install-Package System.Composition -Version 9.0.3
                    
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="System.Composition" Version="9.0.3" />
                    
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="System.Composition" Version="9.0.3" />
                    
Directory.Packages.props
<PackageReference Include="System.Composition" />
                    
Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.
paket add System.Composition --version 9.0.3
                    
#r "nuget: System.Composition, 9.0.3"
                    
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
#addin nuget:?package=System.Composition&version=9.0.3
                    
Install System.Composition as a Cake Addin
#tool nuget:?package=System.Composition&version=9.0.3
                    
Install System.Composition as a Cake Tool

About

Provides the Managed Extensibility Framework (MEF) 2.0, a lightweight, attribute-driven Dependency Injection (DI) container.

MEF simplifies the composition of applications by allowing components to be loosely coupled and dynamically discovered. This package supports the development of modular and maintainable applications by enabling parts to be composed at runtime.

Key Features

  • Components are discovered and composed using attributes.
  • Provides dependency injection capabilities for loosely coupled modules.

How to Use

Running code from a discovered component.

using System.Composition;
using System.Composition.Hosting;

var configuration = new ContainerConfiguration().WithPart<Service>();

using var container = configuration.CreateContainer();

var service = container.GetExport<Service>();
service.Execute();
// Output: Service is running!

[Export]
public class Service
{
    public void Execute() => Console.WriteLine("Service is running!");
}

Main Types

The main types provided by this library are:

  • System.Composition.ExportAttribute
  • System.Composition.ImportAttribute
  • System.Composition.Convention.ConventionBuilder
  • System.Composition.Hosting.CompositionHost
  • System.Composition.CompositionContext
  • System.Composition.CompositionContextExtensions

Additional Documentation

Feedback & Contributing

System.Composition is released as open source under the MIT license. Bug reports and contributions are welcome at the GitHub repository.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed. 
.NET Core netcoreapp2.0 is compatible.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 is compatible.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (172)

Showing the top 5 NuGet packages that depend on System.Composition:

Package Downloads
Microsoft.CodeAnalysis.Workspaces.Common

A shared package used by the .NET Compiler Platform ("Roslyn") including support for analyzing projects and solutions. Do not install this package manually, it will be added as a prerequisite by other packages that require it. More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/75e79dace86b274327a1afe479228d82a06051a4.

Microsoft.CodeAnalysis.CSharp.Workspaces

.NET Compiler Platform ("Roslyn") support for analyzing C# projects and solutions. More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/75e79dace86b274327a1afe479228d82a06051a4.

Microsoft.CodeAnalysis.VisualBasic.Workspaces

.NET Compiler Platform ("Roslyn") support for analyzing Visual Basic projects and solutions. More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/75e79dace86b274327a1afe479228d82a06051a4.

Microsoft.CodeAnalysis.Features

.NET Compiler Platform ("Roslyn") support for creating editing experiences. More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/75e79dace86b274327a1afe479228d82a06051a4.

Microsoft.CodeAnalysis.CSharp.Features

.NET Compiler Platform ("Roslyn") support for creating C# editing experiences. More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/75e79dace86b274327a1afe479228d82a06051a4.

GitHub repositories (53)

Showing the top 20 popular GitHub repositories that depend on System.Composition:

Repository Stars
BeyondDimension/SteamTools
🛠「Watt Toolkit」是一个开源跨平台的多功能 Steam 工具箱。
dotnet/roslyn
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
JustArchiNET/ArchiSteamFarm
C# application with primary purpose of farming Steam cards from multiple accounts simultaneously.
dotnet/machinelearning
ML.NET is an open source and cross-platform machine learning framework for .NET.
dotnet/docfx
Static site generator for .NET API documentation.
roslynpad/roslynpad
A cross-platform C# editor based on Roslyn and AvalonEdit
neuecc/Utf8Json
Definitely Fastest and Zero Allocation JSON Serializer for C#(NET, .NET Core, Unity, Xamarin).
apache/lucenenet
Apache Lucene.NET
rubberduck-vba/Rubberduck
Every programmer needs a rubberduck. COM add-in for the VBA & VB6 IDE (VBE).
OmniSharp/omnisharp-roslyn
OmniSharp server (HTTP, STDIO) based on Roslyn workspaces
VitalElement/AvalonStudio
Cross platform IDE and Shell
dotnet/roslyn-analyzers
KirillOsenkov/SourceBrowser
Source browser website generator that powers http://referencesource.microsoft.com and http://sourceroslyn.io
security-code-scan/security-code-scan
Vulnerability Patterns Detector for C# and VB.NET
danielpalme/IocPerformance
Performance comparison of .NET IoC containers
microsoft/binskim
A binary static analysis tool that provides security and correctness results for Windows Portable Executable and *nix ELF binary formats
OData/odata.net
ODataLib: Open Data Protocol - .NET Libraries and Frameworks
dotnet/arcade
Tools that provide common build infrastructure for multiple .NET Foundation projects.
icsharpcode/RefactoringEssentials
Refactoring Essentials for Visual Studio
chummer5a/chummer5a
Character generator for Shadowrun 5th edition
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10.0.0-preview.2.25163.2 301 3/18/2025
10.0.0-preview.1.25080.5 368 2/25/2025
9.0.4 284 4/8/2025
9.0.3 19,639 3/11/2025
9.0.2 25,865 2/11/2025
9.0.1 28,879 1/14/2025
9.0.0 110,312 11/12/2024
9.0.0-rc.2.24473.5 689 10/8/2024
9.0.0-rc.1.24431.7 539 9/10/2024
9.0.0-preview.7.24405.7 719 8/13/2024
9.0.0-preview.6.24327.7 556 7/9/2024
9.0.0-preview.5.24306.7 454 6/11/2024
9.0.0-preview.4.24266.19 429 5/21/2024
9.0.0-preview.3.24172.9 671 4/11/2024
9.0.0-preview.2.24128.5 660 3/12/2024
9.0.0-preview.1.24080.9 8,229 2/13/2024
8.0.0 12,564,025 11/14/2023
8.0.0-rc.2.23479.6 3,405 10/10/2023
8.0.0-rc.1.23419.4 1,124 9/12/2023
8.0.0-preview.7.23375.6 1,133 8/8/2023
8.0.0-preview.6.23329.7 938 7/11/2023
8.0.0-preview.5.23280.8 773 6/13/2023
8.0.0-preview.4.23259.5 1,108 5/16/2023
8.0.0-preview.3.23174.8 1,012 4/11/2023
8.0.0-preview.2.23128.3 1,030 3/14/2023
8.0.0-preview.1.23110.8 664 2/21/2023
7.0.0 39,441,968 11/7/2022
7.0.0-rc.2.22472.3 750 10/11/2022
7.0.0-rc.1.22426.10 503 9/14/2022
7.0.0-preview.7.22375.6 452 8/9/2022
7.0.0-preview.6.22324.4 582 7/12/2022
7.0.0-preview.5.22301.12 4,359 6/14/2022
7.0.0-preview.4.22229.4 721 5/10/2022
7.0.0-preview.3.22175.4 727 4/13/2022
7.0.0-preview.2.22152.2 609 3/14/2022
7.0.0-preview.1.22076.8 522 2/17/2022
6.0.0 111,644,971 11/8/2021
6.0.0-rc.2.21480.5 967 10/12/2021
6.0.0-rc.1.21451.13 1,061 9/14/2021
6.0.0-preview.7.21377.19 2,693 8/10/2021
6.0.0-preview.6.21352.12 1,346 7/14/2021
6.0.0-preview.5.21301.5 494 6/15/2021
6.0.0-preview.4.21253.7 526 5/24/2021
6.0.0-preview.3.21201.4 620 4/8/2021
6.0.0-preview.2.21154.6 2,443 3/11/2021
6.0.0-preview.1.21102.12 1,138 2/12/2021
5.0.1 717,577 1/12/2021 5.0.1 is deprecated because it is no longer maintained.
5.0.0 474,714 11/9/2020 5.0.0 is deprecated because it is no longer maintained.
5.0.0-rc.2.20475.5 16,805 10/13/2020
5.0.0-rc.1.20451.14 894 9/14/2020
5.0.0-preview.8.20407.11 858 8/25/2020
5.0.0-preview.7.20364.11 724 7/21/2020
5.0.0-preview.6.20305.6 2,113 6/25/2020
5.0.0-preview.5.20278.1 917 6/10/2020
5.0.0-preview.4.20251.6 859 5/18/2020
5.0.0-preview.3.20214.6 646 4/23/2020
5.0.0-preview.2.20160.6 697 4/2/2020
5.0.0-preview.1.20120.5 692 3/16/2020
1.4.1 390,913 5/12/2020
1.4.0 953,621 12/3/2019
1.4.0-preview3.19551.4 1,751 11/13/2019
1.4.0-preview2.19523.17 786 11/1/2019
1.4.0-preview1.19504.10 715 10/15/2019
1.3.0 1,101,529 9/23/2019
1.3.0-rc1.19456.4 866 9/16/2019
1.3.0-preview9.19421.4 883 9/4/2019
1.3.0-preview9.19416.11 574 9/4/2019
1.3.0-preview8.19405.3 1,574 8/13/2019
1.3.0-preview7.19362.9 1,553 7/23/2019
1.3.0-preview6.19303.8 1,126 6/12/2019
1.3.0-preview6.19264.9 555 9/4/2019
1.3.0-preview5.19224.8 3,316 5/6/2019
1.3.0-preview4.19212.13 1,054 4/18/2019
1.3.0-preview3.19128.7 1,411 3/6/2019
1.3.0-preview.19073.11 22,293 1/29/2019
1.3.0-preview.18571.3 1,711 12/3/2018
1.2.0 2,715,151 5/29/2018
1.2.0-rc1 2,736 5/6/2018
1.2.0-preview2-26406-04 3,020 4/10/2018
1.2.0-preview1-26216-02 3,369 2/26/2018
1.1.0 2,523,545 8/11/2017
1.1.0-preview2-25405-01 4,987 6/27/2017
1.1.0-preview1-25305-02 347,464 5/9/2017
1.0.31 188,764,465 11/15/2016
1.0.31-preview1-24530-04 2,485 10/24/2016