// Deserialize a version 2.0 object.
public static void ReadVersion2(string path)
{
FileStream fs = new FileStream(path, FileMode.Open);
DataContractSerializer ser = new DataContractSerializer(typeof(PersonVersion2));
Console.WriteLine("Deserializing new data to version 2 \n\n");
PersonVersion2 p2 = (PersonVersion2)ser.ReadObject(fs);
fs.Close();
Console.WriteLine("The data includes the old ID field value. \n");
Console.WriteLine("\t (New) Name: {0}", p2.Name);
Console.WriteLine("\t ID: {0} \n", p2.ID);
}
// Create an instance of the version 2.0 class. It has
// extra data (ID field) that version 1.0 does
// not understand.
static void WriteVersion2(string path)
{
Console.WriteLine("Creating a version 2 object");
PersonVersion2 p2 = new PersonVersion2();
p2.Name = "Elizabeth";
p2.ID = 2006;
Console.WriteLine("Object data includes an ID");
Console.WriteLine("\t Name: {0}", p2.Name);
Console.WriteLine("\t ID: {0} \n", p2.ID);
// Create an instance of the DataContractSerializer.
DataContractSerializer ser =
new DataContractSerializer(typeof(PersonVersion2));
Console.WriteLine("Serializing the v2 object to a file. \n\n");
FileStream fs = new FileStream(path, FileMode.Create);
ser.WriteObject(fs, p2);
fs.Close();
}