Include .net core class library into another .net core class library

Question

I have created a class library with the target framework .NETCoreApp 1.1 with some objects that are common among my classes.

In a second project, also a class library with the target framework .NETCoreApp 1.1 where I want to include the previous created project dll.

How can I do that? I tried to explicitly add the dll in the references, but when I build the second project I get the following error:

Cannot find project info for 'ProjectPath\ProjectFile.csproj'. This can indicate a missing project reference.

When I check the projects assemblies list I see my dll added there, without the yellow warning icon... What am I doing wrong?

EDIT:

I am currently using Visual Studio 2017.

And this is the csproj of my second project, the one giving the error:

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

  <PropertyGroup>
    <TargetFramework>netcoreapp1.1</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="NLog.Web.AspNetCore" Version="4.3.1" />
  </ItemGroup>

  <ItemGroup>
    <Reference Include="Common">
      <HintPath>..\Common\bin\Release\netcoreapp1.1\Common.dll</HintPath>
    </Reference>
  </ItemGroup>
</Project>

Did you use any tooling to do that? VS, CLI, manual edit? also, what does your csproj file contain? — Martin Ullrich
– Martin Ullrich, Commented Apr 28, 2017 at 13:06

Martin Ullrich · Accepted Answer · 2017-04-28 14:01:50Z

2

You added a "Reference" instead of a "Project Reference". You can correct this by replacing the last <ItemGroup> element with:

<ItemGroup>
  <ProjectReference Include="..\Common\Common.csproj" />
</ItemGroup>

answered Apr 28, 2017 at 14:01

Martin Ullrich

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3 Comments

Alessandro Over a year ago

That was the problem. Thank you.

Alessandro Over a year ago

I solved the problem I had, but a new one appeared, I have one Console application with the target framework .NETCoreApp 1.1, and I added both projects the same way you told me, as a project, and not as a single dll, the project compiles and runs, but at some point I get this exception: Could not load file or assembly 'Common Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified. You know what can be wrong?

Alessandro Over a year ago

Oh never mind, I followed your other comment and ran dotnet restore and got it working. Thank you again.

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