System.Composition.Hosting 9.0.0-rc.2.24473.5

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
435
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
129
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
130
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
136
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
215
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.
140
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.
125
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.
127
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.
131
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.
137
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration
128
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration
130
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration
208
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration
393
System.Composition.TypedParts
Provides some extension methods for the Managed Extensibility Framework. Commonly Used Types: System.Composition.CompositionContextExtensions System.Composition.Hosting.ContainerConfiguration 029cf57733b7ec6c1dd8a13857e800b9a8d97192 When using NuGet 3.x this package requires at least version 3.4.
134
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.
129
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.
133
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.
136
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.
138

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

.NET Framework 4.6.2

.NET 8.0

.NET 9.0

.NET Standard 2.0

Version Downloads Last updated
11.0.0-preview.2.26159.112 10 03/12/2026
11.0.0-preview.1.26104.118 11 02/13/2026
10.0.5 10 03/13/2026
10.0.4 8 03/12/2026
10.0.3 11 02/12/2026
10.0.2 15 01/13/2026
10.0.1 50 12/12/2025
10.0.0 37 11/12/2025
10.0.0-rc.2.25502.107 71 10/15/2025
10.0.0-rc.1.25451.107 73 09/10/2025
10.0.0-preview.7.25380.108 65 08/15/2025
10.0.0-preview.6.25358.103 75 07/16/2025
10.0.0-preview.5.25277.114 80 06/07/2025
10.0.0-preview.4.25258.110 76 05/13/2025
10.0.0-preview.3.25171.5 96 04/14/2025
10.0.0-preview.2.25163.2 80 04/01/2025
10.0.0-preview.1.25080.5 90 04/01/2025
9.0.14 9 03/12/2026
9.0.13 15 02/13/2026
9.0.12 18 01/13/2026
9.0.11 38 11/12/2025
9.0.10 56 10/15/2025
9.0.9 70 09/10/2025
9.0.8 65 08/05/2025
9.0.7 71 07/09/2025
9.0.6 74 06/13/2025
9.0.5 89 05/14/2025
9.0.4 101 04/09/2025
9.0.3 107 03/31/2025
9.0.2 103 03/31/2025
9.0.1 109 04/01/2025
9.0.0 109 11/14/2024
9.0.0-rc.2.24473.5 96 10/21/2024
9.0.0-rc.1.24431.7 105 09/19/2024
9.0.0-preview.7.24405.7 84 08/19/2024
9.0.0-preview.6.24327.7 111 07/18/2024
9.0.0-preview.5.24306.7 107 07/18/2024
9.0.0-preview.4.24266.19 122 07/18/2024
9.0.0-preview.3.24172.9 114 07/18/2024
9.0.0-preview.2.24128.5 123 07/18/2024
9.0.0-preview.1.24080.9 114 07/18/2024
8.0.0 111 07/18/2024
8.0.0-rc.2.23479.6 120 07/18/2024
8.0.0-rc.1.23419.4 108 07/18/2024
8.0.0-preview.7.23375.6 114 07/18/2024
8.0.0-preview.6.23329.7 140 07/18/2024
8.0.0-preview.5.23280.8 113 07/18/2024
8.0.0-preview.4.23259.5 111 07/18/2024
8.0.0-preview.3.23174.8 99 07/18/2024
8.0.0-preview.2.23128.3 107 07/18/2024
8.0.0-preview.1.23110.8 126 07/18/2024
7.0.0 417 02/05/2024
7.0.0-rc.2.22472.3 98 07/18/2024
7.0.0-rc.1.22426.10 111 07/18/2024
7.0.0-preview.7.22375.6 126 07/18/2024
7.0.0-preview.6.22324.4 110 07/18/2024
7.0.0-preview.5.22301.12 102 07/18/2024
7.0.0-preview.4.22229.4 128 07/18/2024
7.0.0-preview.3.22175.4 115 07/18/2024
7.0.0-preview.2.22152.2 106 07/18/2024
7.0.0-preview.1.22076.8 117 07/18/2024
6.0.2-mauipre.1.22054.8 77 08/12/2025
6.0.0 209 02/04/2024
6.0.0-rc.2.21480.5 108 07/18/2024
6.0.0-rc.1.21451.13 108 07/18/2024
6.0.0-preview.7.21377.19 123 07/18/2024
6.0.0-preview.6.21352.12 120 07/18/2024
6.0.0-preview.5.21301.5 107 07/18/2024
6.0.0-preview.4.21253.7 95 07/18/2024
6.0.0-preview.3.21201.4 118 07/18/2024
6.0.0-preview.2.21154.6 102 07/18/2024
6.0.0-preview.1.21102.12 147 07/18/2024
5.0.1 119 07/18/2024
5.0.0 129 07/18/2024
5.0.0-rc.2.20475.5 116 07/18/2024
5.0.0-rc.1.20451.14 111 07/18/2024
5.0.0-preview.8.20407.11 143 07/18/2024
5.0.0-preview.7.20364.11 107 07/18/2024
5.0.0-preview.6.20305.6 106 07/18/2024
5.0.0-preview.5.20278.1 130 07/18/2024
5.0.0-preview.4.20251.6 121 07/18/2024
5.0.0-preview.3.20214.6 114 07/18/2024
5.0.0-preview.2.20160.6 115 07/18/2024
5.0.0-preview.1.20120.5 125 07/18/2024
1.4.1 107 07/18/2024
1.4.0 96 07/18/2024
1.4.0-preview3.19551.4 98 07/18/2024
1.4.0-preview2.19523.17 99 07/18/2024
1.4.0-preview1.19504.10 109 07/18/2024
1.3.0 122 07/18/2024
1.3.0-rc1.19456.4 120 07/18/2024
1.3.0-preview9.19421.4 110 07/18/2024
1.3.0-preview9.19416.11 132 07/18/2024
1.3.0-preview8.19405.3 110 07/18/2024
1.3.0-preview7.19362.9 124 07/18/2024
1.3.0-preview6.19303.8 123 07/18/2024
1.3.0-preview6.19264.9 108 07/18/2024
1.3.0-preview5.19224.8 107 07/18/2024
1.3.0-preview4.19212.13 125 07/18/2024
1.3.0-preview3.19128.7 111 07/18/2024
1.3.0-preview.19073.11 110 07/18/2024
1.3.0-preview.18571.3 118 07/18/2024
1.2.0 133 07/18/2024
1.2.0-rc1 109 07/18/2024
1.2.0-preview2-26406-04 112 07/18/2024
1.2.0-preview1-26216-02 114 07/18/2024
1.1.0 124 07/18/2024
1.1.0-preview2-25405-01 113 07/18/2024
1.1.0-preview1-25305-02 113 07/18/2024
1.0.31 136 02/04/2024
1.0.31-preview1-24530-04 107 07/18/2024