同一流上的多个(顺序)XmlReader 实例

我的问题应该相对简单：

是否可以(以任何方式(按顺序为同一流创建多个 XmlReader 对象，而无需第一个读取器在释放流后将流推进到末尾？

示例代码(请注意，对 ReadElement 的第二次调用将失败，因为无论出于何种原因，第一个读取器都将流推进到最后(：

private static void DoTest()
{
    using (var stream = new MemoryStream())
    {
        WriteElement("Test", stream);
        Console.WriteLine("Stream Length after first write: {0}", stream.Length);
        WriteElement("Test2", stream);
        Console.WriteLine("Stream Length after second write: {0}", stream.Length);
        stream.Position = 0;
        Console.WriteLine(ReadElement(stream));
        Console.WriteLine("Position is now: {0}/{1}", stream.Position, stream.Length);
        Console.WriteLine(ReadElement(stream)); // Note that this will fail due to the stream position now being at the end.
    }
}
private static string ReadElement(Stream source)
{
    string result;
    using (var reader = XmlReader.Create(source, new XmlReaderSettings
    {
        ConformanceLevel = ConformanceLevel.Fragment,
        CloseInput = false
    }))
    {
        reader.Read();
        result = reader.Name;
        reader.Read();
    }
    return result;
}
private static void WriteElement(string name, Stream target)
{
    using (var writer = XmlWriter.Create(target, new XmlWriterSettings
                                                    {
                                                        ConformanceLevel = ConformanceLevel.Fragment,
                                                        WriteEndDocumentOnClose = false,
                                                        OmitXmlDeclaration = true,
                                                    }))
    {
        writer.WriteStartElement(name);
        writer.WriteEndElement();
    }
}

如果这不可能用"纯.Net'，是否有任何替代("轻量级"(XML解析器库可以支持这种行为？

int len, i = 0; //len is the length of the interval
byte[] buffer = new byte[0xff];
while (len --> 0)
    buffer[i++] = stream.ReadByte (); //copies the interval