Compiling netstandard20 libraries

Question

My IT department uninstalled .net core 2.0 SDK from our servers claiming that .net core 2.0 is no more supported by Microsoft.

Is there a version other than .net core 2.0 SDK which can be used to compile assemblies which have reference to netstandard20?

Answer 1

they are correct, core 2.0-3.0 sdk is not supported (3.1 ends in December, net 5 in May). but .netstandard 2.0 is its own framework and still supported. you can build .netstandard 2.0 with classic 4.8 or .net 6.0 runtimes.

dotnet new classlib -f netstandard2.0

Answer 2

no. it creates a project file with the framework set to netstandard 2.0

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

  <PropertyGroup> 
    <TargetFramework>netstandard2.0</TargetFramework> 
  </PropertyGroup> 

</Project> 

so just:

dotnet build

Answer 3

is the error from building a .netstandard 2.0 library project, or from an application build using the library. A .netstandard library should not have a reference to core sdk.

If it’s a library, then probably only worked with core projects. Just change from standard to a valid .net core frame, and update the nuget package to compatible versions.

Also, why 3.1? It’s support ends in December.

Answer 4

.net standard 2.0 and the final version 2.1 are supported by .net 3.1+

But nuget pack does not work with modern msbuild files, only the old 4.* format. You should use the dotnet pack or msbuild -t:pack commands instead.

Answer 5

That command is to create a netstandard project.

Is the command to build dotnet build -f netstandard2.0 ?