dotnet/project-system

The C#, F# and Visual Basic project system for Visual Studio

Jeroen Janssen

@japj

Hello, has this gitter room been used before at all? I don’t see any discussion history

Jonathon Marolf

@jmarolf

This was created somewhat recently and I do not think we've had any community discussions here. Have any questions?

Jeroen Janssen

@japj

I am looking into dotnet/project-system#4101 and based on some of the documentation and debugging found my way to https://github.com/dotnet/project-system/blob/dev15.8.x/src/Microsoft.VisualStudio.ProjectSystem.Managed.VS/ProjectSystem/VS/Tree/Dependencies/Subscriptions/PackageRuleHandler.cs , which is where a DependencyType Assembly gets created for the DLL inside a NuGet Package.

If I understand correctly the properties in PackageAssemblyDependencyModel is what (mostly) drives the content of the Properties Window in Visual Studio

what I have trouble tracking down is where these properties are actually filled up in the calling stack. I seems at some point this is coming from async notifications, so I am wondering if that is actually happening inside the project-system sourcecode or not

Jonathon Marolf

@jmarolf

I think @tmeschter answered your original question on dotnet/project-system#4101 but let me know if you have any other questions

Brandon Ording

@bording

@jmarolf Any chance of getting an update on my PR? dotnet/project-system#3787

Jonathon Marolf

@jmarolf

I'll ping Bill

Brandon Ording

@bording

Thanks!

Jonathon Marolf

@jmarolf

I've pinged the reviewers publicly and provately but some of them are not yet awake due to time zone differences

Glenn

@glennawatson

hi, not sure if this is the correct place to chat

So I am fixing my project to compile for both VS 4 Mac/VS 4 Windows

At the moment got most projects compiling with

    <TargetFrameworks>netstandard2.0;net461;uap10.0.16299;Xamarin.iOS10;Xamarin.Mac20;Xamarin.TVOS10;MonoAndroid81;netcoreapp2.0;tizen40</TargetFrameworks>
    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netstandard2.0;Xamarin.iOS10;Xamarin.Mac20;Xamarin.TVOS10;MonoAndroid81;netcoreapp2.0;tizen40</TargetFrameworks>

So for non windows I exclude net461/uap (using MsBuild.Sdk.Extras btw hence the extra TargetFrameworks.

My question is how can I exclude a project from compiling altogether for a non-windows build. Eg I got a uap/net461 only project. Can I do the condition on the project level? I know I could take the approach of a separate .sln file but that's a last resort for me

also another question I have is I am a bit confused by the relationship of the .net SDK and msbuild

Eg to get LicenseExpression tag working I need to have installed .net core 2.1 onwards, even though my project is targetting netcoreapp2.0

Does the .net sdk provide some sort of templates for msbuild?

ProjectLicenseExpression rather (or whatever the new nuget csproj tags are)

Glenn

@glennawatson

might ask on home

jp2masa

@jp2masa

that's because NuGet ships with the .NET SDK, including the build targets

jp2masa

@jp2masa

to disable compilation, you can try something like conditionally importing a targets file (in Directory.Build.targets), for example DisableTargets.targets, and then overriding default build targets, something like this:
Directory.Build.targets:

...
  <Import Project="DisableTargets.targets" Condition="'$(DisableTargets)' == 'true'" />
...

DisableTargets.targets:

<Project>
  <Target Name="Build" />
</Project>

Glenn

@glennawatson

Hmm cool thanks

That sounds like a good solution

Glenn

@glennawatson

I think that solution simplifies having to declare the Target framework twice also

jp2masa

@jp2masa

for the target frameworks you could do this as well:

    <TargetFrameworks>netstandard2.0;Xamarin.iOS10;Xamarin.Mac20;Xamarin.TVOS10;MonoAndroid81;netcoreapp2.0;tizen40</TargetFrameworks>
    <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">$(TargetFrameworks);net461;uap10.0.16299</TargetFrameworks>

Glenn

@glennawatson

Thanks

I am considering doing like

<Import Project="DisableTargets.targets" Condition="'$(TargetFramework.StartsWith('net4')) and '$(OS)' != 'Windows_NT'" />

In my Directory.Build.Targets

not sure if I have access to the TargetFramework at that time though

regardless I have enough information to get a clean solution now

Jonathon Marolf

@jmarolf

@glennawatson is there a reason you can't just target only netstandard2.0?

Glenn

@glennawatson

WPF/UWP projects

this is a cross platform MVVM project, which targets UWP/WPF/Xamarin

and the solution above worked

so now able to keep my TargetFrameworks the original way and just use the disable target

Jonathon Marolf

@jmarolf

with UI code I assume?

Glenn

@glennawatson

some

We use the target frameworks to include different directories in our platform folder

  <ItemGroup>
    <Compile Remove="Platforms\**\*.cs" />
    <None Include="Platforms\**\*.cs" />
 </ItemGroup>

 <ItemGroup Condition=" $(TargetFramework.StartsWith('netstandard')) ">
    <Compile Include="Platforms\netstandard2.0\**\*.cs" />
  </ItemGroup>
  <ItemGroup Condition=" $(TargetFramework.StartsWith('net4')) ">
    <Compile Include="Platforms\net461\**\*.cs" />
  </ItemGroup>

So it gets isolated off

with .net core 3 we are going to have to use nuget transitive feature, since at the moment we have to include both UseWPF/UseUWP etc https://github.com/NuGet/Home/wiki/Allow-package--authors-to-define-build-assets-transitive-behavior

that's the advice we been given by the guy working on the .net core 3 stuff

Paul M Cohen

@paul1956

Is this the correct library to build a VBProj file outside of visual studio? I want to create a project file from scratch to compile a set of VB files into a dll. If so are there any example of doing so, if not does anything exist. I use MsBuild Workspace to read one, I want to transform what I get into something else.

Using Workspace As MSBuildWorkspace = MSBuildWorkspace.Create()
    Dim currentProject As Project = Workspace.OpenProjectAsync(FileName).Result
    Workspace.LoadMetadataForReferencedProjects = True
     If currentProject.HasDocuments Then
         For Each document As Document In currentProject.Documents

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