How to set build version, culture and public key token when compiled with Roslyn?

You need to include source code that sets the Assembly * attributes just like in VS C # project templates. If you have done so, the .NET version information is installed. You can read this information with Reflection or tools like ILSpy.

This way, Explorer won't show version information on the property page. Explorer only shows Win32 VersionInfo , not .NET version information. To set these values, you need to fix the Win32 resource ID with Rosyln. Fortunately, there is a way to automatically generate Win32 information from .NET: CreateDefaultWin32Resources .

Here's a complete and working example code:

public void VersionInfoExample()
{
    // 1. Generate AssemblyInfo.cs-like C# code and parse syntax tree
    StringBuilder asmInfo = new StringBuilder();

    asmInfo.AppendLine("using System.Reflection;");
    asmInfo.AppendLine("[assembly: AssemblyTitle(\"Test\")]");
    asmInfo.AppendLine("[assembly: AssemblyVersion(\"1.1.0\")]");
    asmInfo.AppendLine("[assembly: AssemblyFileVersion(\"1.1.0\")]");
    // Product Info
    asmInfo.AppendLine("[assembly: AssemblyProduct(\"Foo\")]");
    asmInfo.AppendLine("[assembly: AssemblyInformationalVersion(\"1.3.3.7\")]");

    var syntaxTree = CSharpSyntaxTree.ParseText(asmInfo.ToString(), encoding: Encoding.Default);

    // 2. Create compilation
    string mscorlibPath = typeof(object).Assembly.Location;
    MetadataReference mscorlib = MetadataReference.CreateFromFile(mscorlibPath, new MetadataReferenceProperties(MetadataImageKind.Assembly));
    CSharpCompilationOptions options = new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary);

    CSharpCompilation compilation = CSharpCompilation.Create("Test.dll",
                            references: new[] { mscorlib },
                            syntaxTrees: new[] { syntaxTree },
                            options: options);

    // 3. Emit code including win32 version info
    using (MemoryStream dllStream = new MemoryStream())
    using (MemoryStream pdbStream = new MemoryStream())
    using (Stream win32resStream = compilation.CreateDefaultWin32Resources(
                                                                versionResource: true, // Important!
                                                                noManifest: false,
                                                                manifestContents: null,
                                                                iconInIcoFormat: null))
    {
        EmitResult result = compilation.Emit(
                                     peStream: dllStream,
                                    pdbStream: pdbStream,
                                    win32Resources: win32resStream);

        System.IO.File.WriteAllBytes("Test.dll", dllStream.ToArray());
    }
}