I am using an instance of a private class as the state object supplied to a stream.BeginRead operation. (The class is private to my main stream reading/writing class.)

public class MainClass
{
    // ...

    private class ResponseState
    {
        public IResponse response;
        public Stream stream;
        public byte[] buffer = new byte[1024];
    }
}

Access to the class is via the fields directly. Should I really be providing access to the class via properties in this case, even though it is only to be used for holding state?

Interested to know what others do.