问序列化并添加到XDocument

EN

    public static XDocument Serialize(this Calendar obj)
    {
        XDocument doc = new XDocument();

        using (var writer = doc.CreateWriter())
        {
            writer.WriteStartElement("Calendar");

            foreach (var dayOfWeek in obj.DaysOfWeek)
            {
                writer.WriteStartElement("DayOfWeek");

                writer.WriteAttributeString("Id", dayOfWeek.Id.ToString());
                writer.WriteAttributeString("Code", dayOfWeek.Code);
                writer.WriteAttributeString("Name", dayOfWeek.Name);

                writer.WriteEndElement();
            }

            foreach (var monthOfYear in obj.MonthsOfYear)
            {
                writer.WriteStartElement("MonthOfYear");

                writer.WriteAttributeString("Id", monthOfYear.Id.ToString());
                writer.WriteAttributeString("Code", monthOfYear.Code);
                writer.WriteAttributeString("Name", monthOfYear.Name);

                writer.WriteEndElement();
            }
        }

        return doc;
    }

class Program
{
    static void Main(string[] args)
    {
        var document = CalendarService.DaysOfWeek.Serialize();
    }
}

public static class CalendarService
{
    public static List<Calendar> DaysOfWeek
    {
        get
        {
            return new List<Calendar>
                    {
                        new Calendar { Id = 1, Code = "Mo", Name = "Mo" },
                        new Calendar { Id = 2, Code = "Tu", Name = "Tu" },
                        new Calendar { Id = 3, Code = "We", Name = "We" },
                        new Calendar { Id = 4, Code = "Th", Name = "Th" },
                        new Calendar { Id = 5, Code = "Fr", Name = "Fr" },
                        new Calendar { Id = 6, Code = "Sa", Name = "Sa" },
                        new Calendar { Id = 7, Code = "Su", Name = "Su" }
                    };
        }
    }
    public static List<Calendar> MonthsOfYear
    {
        get
        {
            return new List<Calendar>
                {
                    new Calendar { Id = 1, Code = "Jan", Name = "Jan" },
                    new Calendar { Id = 2, Code = "Feb", Name = "Feb" },
                    new Calendar { Id = 3, Code = "Mar", Name = "Mar" },
                    new Calendar { Id = 4, Code = "Apr", Name = "Apr" },
                    new Calendar { Id = 5, Code = "May", Name = "May" },
                    new Calendar { Id = 6, Code = "Jun", Name = "Jun" },
                    new Calendar { Id = 7, Code = "Jul", Name = "Jul" },
                    new Calendar { Id = 8, Code = "Aug", Name = "Aug" },
                    new Calendar { Id = 9, Code = "Sep", Name = "Sep" },
                    new Calendar { Id = 10, Code = "Oct", Name = "Oct" },
                    new Calendar { Id = 11, Code = "Nov", Name = "Nov" },
                    new Calendar { Id = 12, Code = "Dec", Name = "Dec" },
                };
        }
    }
}

public static class SerializationUtil
{
    public static T Deserialize<T>(XDocument doc)
    {
        XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));

        using (var reader = doc.Root.CreateReader())
        {
            return (T)xmlSerializer.Deserialize(reader);
        }
    }

    public static XDocument Serialize(this object obj)
    {
        XmlSerializer xmlSerializer = new XmlSerializer(obj.GetType());

        XDocument doc = new XDocument();
        using (var writer = doc.CreateWriter())
        {
            xmlSerializer.Serialize(writer, obj);
        }

        return doc;
    }
}

[Serializable]
public class Calendar
{
    public int Id { get; set; }
    public string Code { get; set; }
    public string Name { get; set; }
}