Mega Code Archive
Control Serialization of Derived Classes
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using System;
using System.Linq;
using System.Xml;
using System.Xml.Serialization;
using System.Xml.Linq;
using System.Collections;
using System.Collections.Generic;
using System.Xml.XPath;
using System.IO;
public class Orders
{
public Book[] Books;
}
public class Book
{
public string ISBN;
}
public class ExpandedBook : Book
{
public bool NewEdition;
}
public class Run
{
public static void Main(){}
public void SerializeObject(string filename)
{
XmlAttributes attrs = new XmlAttributes();
XmlElementAttribute attr = new XmlElementAttribute();
attr.ElementName = "NewBook";
attr.Type = typeof(ExpandedBook);
attrs.XmlElements.Add(attr);
XmlAttributeOverrides attrOverrides = new XmlAttributeOverrides();
attrOverrides.Add(typeof(Orders), "Books", attrs);
XmlSerializer s = new XmlSerializer(typeof(Orders), attrOverrides);
TextWriter writer = new StreamWriter(filename);
Orders myOrders = new Orders();
ExpandedBook b = new ExpandedBook();
b.ISBN = "123456789";
b.NewEdition = true;
myOrders.Books = new ExpandedBook[] { b };
s.Serialize(writer, myOrders);
writer.Close();
}
public void DeserializeObject(string filename)
{
XmlAttributeOverrides attrOverrides = new XmlAttributeOverrides();
XmlAttributes attrs = new XmlAttributes();
XmlElementAttribute attr = new XmlElementAttribute();
attr.ElementName = "NewBook";
attr.Type = typeof(ExpandedBook);
attrs.XmlElements.Add(attr);
attrOverrides.Add(typeof(Orders), "Books", attrs);
XmlSerializer s = new XmlSerializer(typeof(Orders), attrOverrides);
FileStream fs = new FileStream(filename, FileMode.Open);
Orders myOrders = (Orders)s.Deserialize(fs);
Console.WriteLine("ExpandedBook:");
ExpandedBook expanded;
foreach (Book b in myOrders.Books)
{
expanded = (ExpandedBook)b;
Console.WriteLine(expanded.ISBN + "\n" + expanded.NewEdition);
}
}
}
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