generate a dynamic empty wcf interface, given a name and namespace

CreateTypeForSvcInterface.cs

string source = string.Format(@"
  using System.ServiceModel;
  namespace CreateTypeForSvcNamespace 
  {{
    [ServiceContract(Namespace=""{0}"",Name=""{1}"")]
    public interface {1} {{ }} 
  }}", ns, name);
  
var asmName = Path.GetRandomFileName();
var compilation = CSharpCompilation.Create(asmName,
  syntaxTrees: 
    new[] 
    {
      CSharpSyntaxTree.ParseText(source)
    },
  references:
    new List<Type>
    {
      typeof(object),
      typeof(ServiceContractAttribute)
    }.Select(tp => MetadataReference.CreateFromFile(tp.Assembly.Location))
      .ToArray(),
  options: 
    new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary));

Assembly asm = null;
using (var ms = new MemoryStream())
{
  EmitResult result = compilation.Emit(ms);
  if (!result.Success)
  {
    throw new InvalidDataException(result.ToString());
  }
  ms.Seek(0, SeekOrigin.Begin);
  asm = Assembly.Load(ms.ToArray());
}

var svcType = asm.GetTypes()[0];