System.Composition.Hosting 10.0.1

About

System.Composition.Hosting is part of the Managed Extensibility Framework (MEF) 2.0, a composition library for .NET that enables dependency injection through attributes or conventions.

This package provides core services for creating composition containers. It offers tools to configure and manage the composition of parts within your application, facilitating dependency injection and enabling modular architectures.

Key Features

  • Create and manage composition containers for dynamic dependency injection.

How to Use

Create a composition host and compose parts.

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

// Create a container configuration
var configuration = new ContainerConfiguration()
    .WithPart<Service>();

// Create the composition host (container)
using CompositionHost container = configuration.CreateContainer();

// Get an instance of the service
var service = container.GetExport<IService>();
service.Run();
// Service is running!

public interface IService
{
    void Run();
}

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

Main Types

The main type provided by this library is:

  • System.Composition.CompositionHost

Additional Documentation

Feedback & Contributing

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

Showing the top 20 packages that depend on System.Composition.Hosting.

Packages Downloads
System.Composition
This package provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions
102
System.Composition
This package provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions
396
System.Composition
This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions
107
System.Composition
This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions
112
System.Composition
This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions
119
System.Composition
This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions
196
System.Composition
This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions 8f968b9e79c5721d78cc88e46fe57457fe9d490d When using NuGet 3.x this package requires at least version 3.4.
115
System.Composition
This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions When using NuGet 3.x this package requires at least version 3.4.
102
System.Composition
This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions When using NuGet 3.x this package requires at least version 3.4.
103
System.Composition
This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions When using NuGet 3.x this package requires at least version 3.4.
104
System.Composition
This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions When using NuGet 3.x this package requires at least version 3.4.
105
System.Composition
This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions When using NuGet 3.x this package requires at least version 3.4.
106
System.Composition
This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Commonly Used Types: System.Composition.ExportAttribute System.Composition.ImportAttribute System.Composition.Convention.ConventionBuilder System.Composition.Hosting.CompositionHost System.Composition.CompositionContext System.Composition.CompositionContextExtensions When using NuGet 3.x this package requires at least version 3.4.
122
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration
102
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration
103
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration
185
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration
368
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration 7e3dbdb95b30650eabade0ac73a10b22d4dbe8b3 When using NuGet 3.x this package requires at least version 3.4.
103
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration When using NuGet 3.x this package requires at least version 3.4.
107
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration When using NuGet 3.x this package requires at least version 3.4.
114

https://go.microsoft.com/fwlink/?LinkID=799421

.NET Framework 4.6.2

.NET 8.0

.NET 9.0

.NET 10.0

.NET Standard 2.0

Version Downloads Last updated
10.0.1 2 12/12/2025
10.0.0 19 11/12/2025
10.0.0-rc.2.25502.107 38 10/15/2025
10.0.0-rc.1.25451.107 40 09/10/2025
10.0.0-preview.7.25380.108 50 08/15/2025
10.0.0-preview.6.25358.103 51 07/16/2025
10.0.0-preview.5.25277.114 60 06/07/2025
10.0.0-preview.4.25258.110 59 05/13/2025
10.0.0-preview.3.25171.5 71 04/14/2025
10.0.0-preview.2.25163.2 62 04/01/2025
10.0.0-preview.1.25080.5 68 04/01/2025
9.0.11 18 11/12/2025
9.0.10 32 10/15/2025
9.0.9 39 09/10/2025
9.0.8 53 08/05/2025
9.0.7 47 07/09/2025
9.0.6 55 06/13/2025
9.0.5 60 05/14/2025
9.0.4 68 04/09/2025
9.0.3 67 03/31/2025
9.0.2 76 03/31/2025
9.0.1 76 04/01/2025
9.0.0 73 11/14/2024
9.0.0-rc.2.24473.5 63 10/21/2024
9.0.0-rc.1.24431.7 66 09/19/2024
9.0.0-preview.7.24405.7 71 08/19/2024
9.0.0-preview.6.24327.7 85 07/18/2024
9.0.0-preview.5.24306.7 93 07/18/2024
9.0.0-preview.4.24266.19 97 07/18/2024
9.0.0-preview.3.24172.9 89 07/18/2024
9.0.0-preview.2.24128.5 107 07/18/2024
9.0.0-preview.1.24080.9 92 07/18/2024
8.0.0 95 07/18/2024
8.0.0-rc.2.23479.6 101 07/18/2024
8.0.0-rc.1.23419.4 93 07/18/2024
8.0.0-preview.7.23375.6 92 07/18/2024
8.0.0-preview.6.23329.7 96 07/18/2024
8.0.0-preview.5.23280.8 90 07/18/2024
8.0.0-preview.4.23259.5 96 07/18/2024
8.0.0-preview.3.23174.8 80 07/18/2024
8.0.0-preview.2.23128.3 86 07/18/2024
8.0.0-preview.1.23110.8 107 07/18/2024
7.0.0 397 02/05/2024
7.0.0-rc.2.22472.3 84 07/18/2024
7.0.0-rc.1.22426.10 84 07/18/2024
7.0.0-preview.7.22375.6 100 07/18/2024
7.0.0-preview.6.22324.4 91 07/18/2024
7.0.0-preview.5.22301.12 87 07/18/2024
7.0.0-preview.4.22229.4 98 07/18/2024
7.0.0-preview.3.22175.4 90 07/18/2024
7.0.0-preview.2.22152.2 83 07/18/2024
7.0.0-preview.1.22076.8 92 07/18/2024
6.0.2-mauipre.1.22054.8 57 08/12/2025
6.0.0 192 02/04/2024
6.0.0-rc.2.21480.5 85 07/18/2024
6.0.0-rc.1.21451.13 91 07/18/2024
6.0.0-preview.7.21377.19 99 07/18/2024
6.0.0-preview.6.21352.12 99 07/18/2024
6.0.0-preview.5.21301.5 91 07/18/2024
6.0.0-preview.4.21253.7 80 07/18/2024
6.0.0-preview.3.21201.4 89 07/18/2024
6.0.0-preview.2.21154.6 85 07/18/2024
6.0.0-preview.1.21102.12 94 07/18/2024
5.0.1 102 07/18/2024
5.0.0 97 07/18/2024
5.0.0-rc.2.20475.5 95 07/18/2024
5.0.0-rc.1.20451.14 81 07/18/2024
5.0.0-preview.8.20407.11 99 07/18/2024
5.0.0-preview.7.20364.11 87 07/18/2024
5.0.0-preview.6.20305.6 88 07/18/2024
5.0.0-preview.5.20278.1 100 07/18/2024
5.0.0-preview.4.20251.6 104 07/18/2024
5.0.0-preview.3.20214.6 88 07/18/2024
5.0.0-preview.2.20160.6 90 07/18/2024
5.0.0-preview.1.20120.5 97 07/18/2024
1.4.1 94 07/18/2024
1.4.0 78 07/18/2024
1.4.0-preview3.19551.4 83 07/18/2024
1.4.0-preview2.19523.17 83 07/18/2024
1.4.0-preview1.19504.10 88 07/18/2024
1.3.0 97 07/18/2024
1.3.0-rc1.19456.4 99 07/18/2024
1.3.0-preview9.19421.4 92 07/18/2024
1.3.0-preview9.19416.11 89 07/18/2024
1.3.0-preview8.19405.3 98 07/18/2024
1.3.0-preview7.19362.9 94 07/18/2024
1.3.0-preview6.19303.8 96 07/18/2024
1.3.0-preview6.19264.9 80 07/18/2024
1.3.0-preview5.19224.8 86 07/18/2024
1.3.0-preview4.19212.13 104 07/18/2024
1.3.0-preview3.19128.7 95 07/18/2024
1.3.0-preview.19073.11 88 07/18/2024
1.3.0-preview.18571.3 90 07/18/2024
1.2.0 108 07/18/2024
1.2.0-rc1 95 07/18/2024
1.2.0-preview2-26406-04 84 07/18/2024
1.2.0-preview1-26216-02 89 07/18/2024
1.1.0 102 07/18/2024
1.1.0-preview2-25405-01 93 07/18/2024
1.1.0-preview1-25305-02 83 07/18/2024
1.0.31 117 02/04/2024
1.0.31-preview1-24530-04 93 07/18/2024