當引用的程序集引用mscorlib 2.0.5.0和4.0.0.0時，如何讓roslyn編譯

Question

我正在動態構建一個使用Microsoft.OData.Client的類，這個庫引用了mscorlib 2.0.5.0（我猜PCL）和4.0.0.0。

我想用roslyn編譯我的類，作為一個更大的程序的一部分，但我似乎無法讓它工作。 我的Roslyn編譯器代碼非常簡約

SyntaxTree syntaxTree = CSharpSyntaxTree.ParseText(s);
            string assemblyName = Path.GetRandomFileName();

            List<MetadataReference> references = new List<MetadataReference>()
            {
                MetadataReference.CreateFromFile(typeof(DataServiceActionQuery).Assembly.Location),
                MetadataReference.CreateFromFile(typeof(ODataAction).Assembly.Location),
                MetadataReference.CreateFromFile(typeof(GeneratedCodeAttribute).Assembly.Location),
                MetadataReference.CreateFromFile(typeof(IEdmModel).Assembly.Location),
                MetadataReference.CreateFromFile(typeof(TimeOfDay).Assembly.Location),
                MetadataReference.CreateFromFile(typeof(object).Assembly.Location),
                MetadataReference.CreateFromFile(typeof(Enumerable).Assembly.Location),
                MetadataReference.CreateFromFile(typeof(XmlDocument).Assembly.Location),
               // MetadataReference.CreateFromFile(@"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETPortable\v4.0\Profile\Profile328\mscorlib.dll")

            };

            references.AddRange(Directory.GetFiles(@"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5\Facades").Select(f => MetadataReference.CreateFromFile(f)));

            var op = new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary);
            //op.WithAssemblyIdentityComparer(DesktopAssemblyIdentityComparer.Default);
            //CSharpCompilationOptions.WithAssemblyIdentityComparer(DesktopAssemblyIdentityComparer.Default);
            CSharpCompilation compilation = CSharpCompilation.Create(
                assemblyName,
                syntaxTrees: new[] { syntaxTree },
                references: references,
                options: op);
            Assembly assembly = null;
            using (var ms = new MemoryStream())
            {
                EmitResult result = compilation.Emit(ms);

                if (!result.Success)
                {
                    IEnumerable<Diagnostic> failures = result.Diagnostics.Where(diagnostic =>
                        //diagnostic.IsWarningAsError ||
                        diagnostic.Severity == DiagnosticSeverity.Error);

                    foreach (Diagnostic diagnostic in failures)
                    {
                        Console.Error.WriteLine("{0}: {1}", diagnostic.Id, diagnostic.GetMessage());
                    }
                }
                else
                {
                    ms.Seek(0, SeekOrigin.Begin);
                    assembly = Assembly.Load(ms.ToArray());                 
                }
        }

這些是我得到的錯誤

CS0012：類型“對象”在未引用的程序集中定義。 您必須添加對程序集'mscorlib，Version = 2.0.5.0，Culture = neutral，PublicKeyToken = 7cec85d7bea7798e，Retargetable = Yes'的引用。

CS0012：類型'XmlReader'在未引用的程序集中定義。 您必須添加對程序集'System.Xml，Version = 2.0.5.0，Culture = neutral，PublicKeyToken = 7cec85d7bea7798e，Retargetable = Yes'的引用。

Answer 1

正如您在評論中預測的那樣， DesktopAssemblyIdentityComparer就是解決方案。 但是， CSharpCompilationOptions是不可變的，並且WithAssemblyIdentityComparer方法返回一個新實例，因此您必須像這樣使用它：

var op = new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary);
op = op.WithAssemblyIdentityComparer(DesktopAssemblyIdentityComparer.Default);
CSharpCompilation compilation = CSharpCompilation.Create(
    assemblyName,
    syntaxTrees: new[] { syntaxTree },
    references: references,
    options: op);