问遍历xmltextreader

EN

private IEnumerable<Report> readReports(Stream reader)
{
    var settings = new XmlReaderSettings();
    settings.IgnoreWhitespace = true;
    var xmlReader = XmlReader.Create(reader, settings);
    xmlReader.MoveToContent();
    xmlReader.Read();
    while (!xmlReader.EOF)
    {
        if (xmlReader.Name.ToUpper() == "report") 
            yield return new Report(xmlReader);

        xmlReader.Read();
    }
}

public Report(XmlReader reader) : this()
{
    reader.MoveToContent();
    if (reader.IsEmptyElement)
    {
        reader.Read();
        return;
    }

    reader.Read();
    while (!reader.EOF)
    {
        if (reader.IsStartElement())
        {
            switch (reader.Name.ToLower())
            {
                case "order_id":
                    this.OrderId = reader.ReadElementContentAsString();
                    break;
                    // abreviated the rest of the fields
                default:
                    reader.Skip();
                    break;
            }
        }
        else if (reader.Name.ToLower() == "report") //this watches for the end element of the container and returns after populating all properties
            return;
    }
}