是否可以使用 Roslyn 构建 ASP.Net 核心 Web 应用程序？

Question

我正在尝试将创建 ASP.NetCore Web 应用程序所需的所有代码放入文本文件中，然后在 ASP.Net Core 3.1 应用程序中读取它并使用 Roslyn 和编译它将其保存为dll文件。我试了很多。我可以为控制台应用程序执行此操作，但不能为 Web 应用程序执行此操作。这就是我所做的

public void Load(string id, string code, IEnumerable<string> allowedAssemblyNames, IEnumerable<Type> allowedTypes, string path)
{
    try
    {
        var _references = new List<MetadataReference>();
        foreach (var assemblyName in allowedAssemblyNames)
        {
            _references.Add(MetadataReference.CreateFromFile(RuntimeEnvironment.GetRuntimeDirectory() + assemblyName + ".dll"));
        }

        foreach (var type in allowedTypes)
        {
            _references.Add(MetadataReference.CreateFromFile(type.Assembly.Location));
        }
        _references.Add(MetadataReference.CreateFromFile(Assembly.Load("netstandard").Location));


        var options = new CSharpCompilationOptions(
            OutputKind.DynamicallyLinkedLibrary,
            reportSuppressedDiagnostics: true,
            optimizationLevel: OptimizationLevel.Release,
            generalDiagnosticOption: ReportDiagnostic.Error,
            allowUnsafe: false);

        var syntaxTree = CSharpSyntaxTree.ParseText(code, options: new CSharpParseOptions(LanguageVersion.Latest, kind: SourceCodeKind.Regular));
        var compilation = CSharpCompilation.Create(id, new[] { syntaxTree }, _references, options);

        assemblyLoadContext = new AssemblyLoadContext(id, true);

        using (var ms = new MemoryStream())
        {
            var result = compilation.Emit(ms);
            if (result.Success)
            {
                ms.Seek(0, SeekOrigin.Begin);
                bytes = ms.ToArray();
                File.WriteAllBytes(path, bytes);
                ms.Seek(0, SeekOrigin.Begin);
                assembly = assemblyLoadContext.LoadFromStream(ms);
            }
        }
    }
    catch (Exception ex)
    {
        throw;
    }

}

这可能吗？

Answer 1

花了一些时间，根据a discussion on GitHub，似乎不可能做到这一点。

给出的答案是：

I believe it's considered unsupported by .NET Core to compile directly against System.Private.CoreLib.dll. In general, it will probably be quite difficult to compile an application without using the dotnet tool and MSBuild, as you will have to effectively replicate all the logic that goes into picking the appropriate reference assemblies, then generating the right executing environment for the .NET Core shared loader.

是否可以使用 Roslyn 构建 ASP.Net 核心 Web 应用程序？

Is that possible to build an ASP.Net Core web application using Roslyn?

c#

roslyn

.net-core

roslyn-code-analysis