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Backport.System.Threading.Lock package icon

Backport.System.Threading.Lock

A micro-library that backports/polyfills .NET 9.0+'s System.Threading.Lock to prior framework versions (from .NET Framework 3.5 up to .NET 8.0), providing as much backward compatibility as possible. Optionally works as a source generator.

Total Downloads
192.3K
192,307
Published
Mar 15, 2026
Latest stable version

Install

.NET CLI
dotnet add package Backport.System.Threading.Lock --version 3.1.8
Package Manager Console
Install-Package Backport.System.Threading.Lock -Version 3.1.8
PackageReference
<PackageReference Include="Backport.System.Threading.Lock" Version="3.1.8" />

Frameworks

.NETCoreApp1.0 .NETFramework3.5 .NETFramework4.0 .NETFramework4.5 net5.0 net6.0 net7.0 net9.0 .NETStandard2.0 .NETStandard2.1

Dependencies

[1.0.5, )

Adoption guide

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Compatibility metadata lists 10 target frameworks; confirm the exact target used by your application.

How to read this guidance

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