How to serialize properties with slashes in the name using BinaryFormatter

Question

Problem

I need to figure out the structure of a class that I do not have access to that was serialized using BinaryFormatter, so that I can serialize more files in the same structure.

What I have tried

Using this answer as reference I was able to make the following code:

private static T TransformMSNRBFToObject<T>(byte[] data) where T : new()
{
   var response = new T();
   using (var stream = new MemoryStream(data))            
   Write((BinaryObject)NRBFReader.ReadStream(stream));            
   return response
 }

private static void Write(BinaryObject bObj, string name = "", int depth = 0)
{
   Trace.WriteLine($"{name} [{bObj.TypeName}] [{bObj.AssemblyName}]");
                        
   foreach (var key in bObj.Keys)
   {
       bObj.TryGetValue(key, out var value);

       if (value is BinaryObject obj)
          Write(obj, key, depth + 1);
       else
        Trace.WriteLine($"{value?.GetType().FullName} {key}");
    }
 }

This was able to determine the structures of multiple classes, including their namespaces & assemblies. This has got me most of the way there, but there are a few items left that I am unsure how to handle.

Properties

There are what appear to be properties that all have a forward slash / within the variable name. They are all of primitive types.

E.g. Item0/B, Item1/B, Setting/1/Index, Setting/2/Value, etc.

Methods

There is also something that I am unable to identify, but my best guess is that they are methods since the name always contains the word Method.

When I output the key I get: DoSomethingMethod

When I output the namespace I get: NamespaceName+DoSomethingMethods

They always contain a key that gives this: System.Int32 value__

I am assuming that value__ is either an input parameter, or the return type.

However, when I add a method it does not serialize.

Questions

• Where is the variable supposed to be stored to result in a / within the variable name?
• Alternatively, is there a way like with XmlSerializer's [XmlAttribute("attributeName")] that I could decorate a property to force it to have a specific name?
• What is the format of the items that appear to be methods?