hugoross / hafner.compatibility.nullablereferencetypeattributes

Backport of the nullable reference type attributes to frameworks that do not provide them.

Hafner.Compatibility.NullableReferenceTypeAttributes

Defines the nullable reference type attributes of namespace System.Diagnostics.CodeAnalysis for frameworks that do not include them, namely .NET Framework 2.0 to 4.8, .NET Core 1.0 to 2.2 and .NET Standard 1.0 to 2.2.

Usage:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFrameworks>net6.0;net5.0;netcoreapp3.1;netcoreapp3.0;netcoreapp2.2;netcoreapp2.1;netcoreapp2.0;netcoreapp1.1;netcoreapp1.0;netstandard2.1;netstandard2.0;netstandard1.6;netstandard1.5;netstandard1.4;netstandard1.3;netstandard1.2;netstandard1.1;netstandard1.0;net48;net472;net471;net47;net462;net461;net46;net452;net451;net45;net403;net40;net35;net30;net20</TargetFrameworks>
    <FrameworksLackingNullableReferenceTypeAttributes>|net20|net30|net35|net40|net403|net45|net451|net452|net46|net461|net462|net47|net471|net472|net48|netcoreapp1.0|netcoreapp1.1|netcoreapp2.0|netcoreapp2.1|netcoreapp2.2|netstandard1.0|netstandard1.1|netstandard1.2|netstandard1.3|netstandard1.4|netstandard1.5|netstandard1.6|netstandard2.0|</FrameworksLackingNullableReferenceTypeAttributes>
    <LangVersion>latest</LangVersion>
    <Nullable>enable</Nullable>
    <NoWarn>NETSDK1138</NoWarn>
  </PropertyGroup>

  <!-- Replace '#' through '$'! -->
  <ItemGroup Condition="#(FrameworksLackingNullableReferenceTypeAttributes.Contains('|#(TargetFramework)|'))">
    <PackageReference Include="Hafner.Compatibility.NullableReferenceTypeAttributes">
      <Version>1.0.0</Version>
    </PackageReference>
  </ItemGroup>

</Project>

Above XML is a Visual Studio 2022 C# project file (*.csproj) that targets all the frameworks from .NET 2.0 to .NET 6.0 for the .NET flavors '.NET Framework', '.NET Core' and '.NET Standard'.

Watch out: If you copy/paste above snipet you need to replace the '#' signs through '$' signs.

I had to check it in like this as otherwise the condition got interpreted, sorry about that.

hafner.compatibility.nullablereferencetypeattributes's Issues

Strong named assemblies for .NET 4.x?

Hi,

First, I'd like to say thanks for taking the time to do this package.

Would you consider strong naming the assemblies for .NET 4.x targets? This is required for a lot of projects, mine included. 😇

Thank you so much!