Is StringWriter inherited from Stream?

Question

.NET

XmlSerializer xmlSerializer = new XmlSerializer(toSerialize.GetType());

    using(StringWriter textWriter = new StringWriter())
    {
        xmlSerializer.Serialize(textWriter, toSerialize);
        return textWriter.ToString();
    }

StringWriter inherits TextWriter, which in turn inherits MarshalByRefObject.
The Serialize method takes a Stream as its first parameter, but StringWriter does not.
Why does the code work then?

Answer 1

The Serialize method is overloaded and, among other things, can take a TextWriter , from which StringWriter is inherited .