multiple objects C# serialization

[marioana]

I have an application which serializes several objects by iterating through them and giving the comand to the object to serialize itself into a stream.

The problem is that now in the second version of the application some of the objects have more members, so the deserialization from former versions will give errors.

I thought of using VTS but I am not sure it will work (most probably not). Anyone has any ideas how to fix this?

[Tischnoetentoet]

I wrote a class to avoid this problem. I have attached it (including a unit test that contains example code how to use it).

[marioana]

Thanks, but I don't think it will help much .

The stream is binary, and is a stream provided by another application through COM. So I can't read what variable is coming, I just have to guess by the order that the objects were written. And to make matters worse, the version of the application was not saved in the serialization stream.
I do not know what the original developer was thinking....