Microsoft.AspNetCore.SystemWebAdapters.Abstractions 2.2.1

Prefix Reserved
.NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. 
dotnet add package Microsoft.AspNetCore.SystemWebAdapters.Abstractions --version 2.2.1
                    


                    

                
NuGet\Install-Package Microsoft.AspNetCore.SystemWebAdapters.Abstractions -Version 2.2.1
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="Microsoft.AspNetCore.SystemWebAdapters.Abstractions" Version="2.2.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Microsoft.AspNetCore.SystemWebAdapters.Abstractions" Version="2.2.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Microsoft.AspNetCore.SystemWebAdapters.Abstractions" />
                    


                            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 Microsoft.AspNetCore.SystemWebAdapters.Abstractions --version 2.2.1
                    


                    

                
#r "nuget: Microsoft.AspNetCore.SystemWebAdapters.Abstractions, 2.2.1"
#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. 
#:package Microsoft.AspNetCore.SystemWebAdapters.Abstractions@2.2.1
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Microsoft.AspNetCore.SystemWebAdapters.Abstractions&version=2.2.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Microsoft.AspNetCore.SystemWebAdapters.Abstractions&version=2.2.1
                    


                            Install as a Cake Tool

Microsoft.AspNetCore.SystemWebAdapters.Abstractions

Provides shared abstractions and interfaces for configuring System Web Adapters in both ASP.NET Core and ASP.NET Framework applications.

Getting Started

This package is typically used as a dependency by other System Web Adapters packages. Most applications don't need to reference it directly.

Usage

Building Custom Extensions

Use this package when building extension libraries:

using Microsoft.AspNetCore.SystemWebAdapters;

public static class MyAdapterExtensions
{
    public static ISystemWebAdapterBuilder AddMyCustomFeature(
        this ISystemWebAdapterBuilder builder)
    {
        builder.Services.AddSingleton<IMyService, MyService>();
        return builder;
    }
}

Custom Session Serialization

Implement custom serializers for session state:

using Microsoft.AspNetCore.SystemWebAdapters.SessionState;

public class MySessionSerializer : ISessionKeySerializer
{
    public bool TrySerialize(string key, object? obj, out byte[] bytes)
    {
        // Implement serialization logic
    }
    
    public bool TryDeserialize(string key, byte[] bytes, out object? obj)
    {
        // Implement deserialization logic
    }
}

Additional Documentation

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.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  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 was computed.  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 (2)

Showing the top 2 NuGet packages that depend on Microsoft.AspNetCore.SystemWebAdapters.Abstractions:

Package Downloads
Microsoft.AspNetCore.SystemWebAdapters.CoreServices

A collection of services to provide support for enabling configuration for Microsoft.AspNetCore.SystemWebAdapters.
Microsoft.AspNetCore.SystemWebAdapters.FrameworkServices

A collection of services for ASP.NET application to incorporate Microsoft.AspNetCore.SystemWebAdapters.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
2.2.1 1,441 12/18/2025
2.2.0 3,320 12/10/2025
2.2.0-preview1.25568.2 542 11/19/2025
2.2.0-preview1.25554.5 471 11/5/2025
2.1.0 42,199 10/21/2025
2.0.0 393,788 2/5/2025
1.4.0 736,797 5/8/2024
1.3.2 303,768 1/26/2024
1.3.1 38,211 1/11/2024
1.3.0 777,894 11/15/2023
1.2.0 198,688 6/29/2023
1.2.0-preview.1.23219.1 1,015 4/26/2023
1.1.0 361,859 3/16/2023
1.0.0 136,894 11/22/2022