Can not get Roslyn to work with .NET 5 project

After spending way too much time, I still can't make Roslyn to load simple C# project. Project source:

Microsoft.NET.Sdk">

    
Exe
net5.0

Code that is trying to load:

using System;
using Microsoft.CodeAnalysis.MSBuild;

namespace Metrics5
{
    class Program
    {
        static void Main(string[] args)
        {
            using var workspace = MSBuildWorkspace.Create();
            
            workspace.LoadMetadataForReferencedProjects = true;
            var currentProject = workspace.OpenProjectAsync(@"C:\work\Metrics5\Metrics5.csproj").Result;
            var diagnostics = workspace.Diagnostics;
                
            foreach(var diagnostic in diagnostics)
            {
                Console.WriteLine(diagnostic.Message);
            }
        }
    }
}

It says:

After I add MSBuildSDKsPath as environment value MSBuildSDKsPath=C:\Program Files\dotnet\sdk\5.0.301\Sdks it seems to pass that step and stuck in another:

And from here I'm not sure how to proceed, am I missing some nuget package? Do I need to install additionally something?

Can not get Roslyn to work with .NET 5 project

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0 Answer

dkam1816 注册会员
2023-01-24 22:40

Add reference to Microsoft.Build.Locator

I used the next packages:

Then register the instance of MSBuild using MSBuildLocator:

//add this line before using MSBuildWorkspace
MSBuildLocator.RegisterDefaults();  //select the recent SDK
using var workspace = MSBuildWorkspace.Create();

You Can control the version of MsBuild:

var visualStudioInstances = MSBuildLocator.QueryVisualStudioInstances();
//select NET5, or whatever by modifying Version.Major 
var instance = visualStudioInstances.FirstOrDefault(x => x.Version.Major.ToString() == "5");
MSBuildLocator.RegisterInstance(instance);