Roslyn编译项目生成空程序集

这是对 this question 在那里,我已经通过几十个帖子的组合得到了解决方案。

这很容易复制:

<Project Sdk="Microsoft.NET.Sdk.Web">
  <PropertyGroup>
    <TargetFramework>net47</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <Folder Include="wwwroot\" />
  </ItemGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore" Version="2.0.0" />
    <PackageReference Include="Microsoft.Build" Version="15.3.409" />
    <PackageReference Include="Microsoft.Build.Tasks.Core" Version="15.3.409" />
    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="2.3.0-beta1" />
    <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="2.3.1" />
    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="2.3.1" />
    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="2.3.1" />
    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.Common" Version="2.3.1" />
    <PackageReference Include="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" Version="1.0.7" />
    <PackageReference Include="Microsoft.Net.Compilers" Version="2.3.1" />
  </ItemGroup>
</Project>

using System.IO;
using System.Linq;
using Microsoft.CodeAnalysis.MSBuild;

namespace WebApplication1
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var workspace = MSBuildWorkspace.Create();
            var project = workspace.OpenProjectAsyn(@"C:\WebApplication1\WebApplication1.csproj").Result;
            var compilation = project.GetCompilationAsync().Result;

            using (var memoryStream = new MemoryStream())
            {
                var result = compilation.Emit(memoryStream);
                if (result.Success)
                {
                    File.WriteAllBytes(Path.Combine(@"C:\WebApplication1\", $"{compilation.AssemblyName}.dll"), memoryStream.ToArray());
                }
            }
        }
    }
}

加载解决方案后查看工作空间,我在Diagnostics属性上看到一条错误消息:

Msbuild failed when processing the file 'C:\WebApplication1\WebApplication1.csproj' with message: The SDK 'Microsoft.NET.Sdk.Web' specified could not be found.