Visual Studio shows NU1105 error even though build and tests pass

[natemcmaster]

Currently, opening the solution files in this repo, like src/Servers/Kestrel.sln, shows a bunch of NU1105 errors in the Error List window. The error looks like this:

Error NU1105 Unable to find project information for "ProjectXYZ.csproj". Inside Visual Studio, this may be because the project is unloaded or not part of current solution.

We believe this is the result of NuGet/Home#5820. There is a draft of a solution in PR in NuGet, but if that doesn't make it in in a reasonable amount of time, we may need to find workarounds.

FWIW - this does not affect command line builds, and also, it appears you can still build and run tests in Visual Studio despite the error.

cc @jainaashish @rrelyea

[natemcmaster]

Build triage: we are going to workaround this by adding projects to our .sln files. Whenever we get NU1105, the solution should be edited to add the missing project.

[natemcmaster]

@JamesNK @JunTaoLuo can you take care of doing this for the solutions that your respective teams work on? Some of this is already done in release/2.2. If you find other places this needs to happen, feel free to edit the .sln and make a PR.

[MarkDixonTech]

I am getting a series of NU1602 errors when opening in Visual Studio. Is this releated?

[natemcmaster]

@MarkDixonTech which solution are you opening?

[MarkDixonTech]

@natemcmaster

src\Mvc\mvc.sln
I followed the instructions here:
https://github.com/aspnet/AspNetCore/blob/master/docs/BuildFromSource.md

[natemcmaster]

I'm not aware of any issues with NU1602 in Mvc.sln. It's likely unrelated. @mkArtakMSFT @NTaylorMullen have you seen this before?

[MarkDixonTech]

I put more details here

https://stackoverflow.com/questions/53832737/nuget-error-building-asp-net-core-from-source

[JamesNK]

I see this in the release/2.2 branch.

19>C:\Development\Source\AspNetCore\src\Mvc\src\Microsoft.AspNetCore.Mvc.Razor\Microsoft.AspNetCore.Mvc.Razor.csproj : error NU1602: Microsoft.AspNetCore.Mvc.ViewFeatures does not provide an inclusive lower bound for dependency Microsoft.Extensions.WebEncoders. An approximate best match of Microsoft.Extensions.WebEncoders 1.0.0 was resolved.

ViewFeatures.csproj references WebEncoders with <PackageReference Include="Microsoft.Extensions.WebEncoders" Version="$(MicrosoftExtensionsWebEncodersPackageVersion)" /> but MicrosoftExtensionsWebEncodersPackageVersion does not exist in dependencies.props.

[JamesNK]

MicrosoftAspNetCoreChunkingCookieManagerSourcesPackageVersion is also missing. I'll create a PR to add them to 2.2.

[JunTaoLuo]

Oops that's my fault. It was removed in #4618. That package was removed in favour of code under Shared/.