System.ComponentModel.Composition
This namespace provides classes that constitute the core of the Managed Extensibility Framework, or MEF. Commonly Used Types: System.ComponentModel.Composition.ChangeRejectedException System.ComponentModel.Composition.CompositionContractMismatchException System.ComponentModel.Composition.CompositionError System.ComponentModel.Composition.CompositionException System.ComponentModel.Composition.ExportAttribute System.ComponentModel.Composition.ImportAttribute System.ComponentModel.Composition.ImportCardinalityMismatchException System.ComponentModel.Composition.Hosting.AggregateCatalog System.ComponentModel.Composition.Hosting.ApplicationCatalog System.ComponentModel.Composition.Hosting.AssemblyCatalog System.ComponentModel.Composition.Hosting.CompositionContainer System.ComponentModel.Composition.Primitives.ComposablePartException System.ComponentModel.Composition.Primitives.ExportDefinition System.ComponentModel.Composition.Primitives.ImportDefinition System.ComponentModel.Composition.ReflectionModel.ReflectionModelServices
Install
dotnet add package System.ComponentModel.Composition --version 6.0.0-preview.7.21377.19
Install-Package System.ComponentModel.Composition -Version 6.0.0-preview.7.21377.19
<PackageReference Include="System.ComponentModel.Composition" Version="6.0.0-preview.7.21377.19" />
Frameworks
Dependencies
No declared dependencies.
Adoption guide
A verified publisher signal is available. Assess fit from the package's supported frameworks, license and dependency graph rather than popularity alone.
This version is marked prerelease. Validate its API and upgrade path before production use.
Compatibility metadata lists 11 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.