A Managed Way To Serialize & Deserialze DateTime field

public class MyEvent
{
    public string Name;

    [XmlIgnore]
    public DateTime Time;
    [XmlElement("Time")]
    public string TimeString
    {
        get { return Time.ToString("yyyy-MM-ddTHH:mm:ss", CultureInfo.InvariantCulture); }
        set { Time = DateTime.ParseExact(value, "yyyy-MM-ddTHH:mm:ss", CultureInfo.InvariantCulture); }
    }

    public MyEvent() { }
    public MyEvent(string name, DateTime time)
    {
        Name = name;
        Time = time;
    }

    static void Main(string[] args)
    {
        MyEvent evt = new MyEvent("event1", new DateTime(2007, 5, 5));

        XmlSerializer serializer = new XmlSerializer(typeof(MyEvent));
        TextWriter writer = new StreamWriter(@"c:\event.xml");
        serializer.Serialize(writer, evt);
        writer.Close();
    }
}

Here TimeString is exposed as a public property. Can we make it private? The answer is yes, but it requires the DataContract new in .NET 3.0:

[DataContract]
public class MyEvent
{
    [DataMember]
    public string Name;

    public DateTime Time;

    [DataMember(Name="Time") ]
    private string TimeString
    {
        get { return Time.ToString("yyyy-MM-ddTHH:mm:ss", CultureInfo.InvariantCulture); }
        set { Time = DateTime.ParseExact(value, "yyyy-MM-ddTHH:mm:ss", CultureInfo.InvariantCulture); }
    }

    public MyEvent(string name, DateTime time)
    {
        Name = name;
        Time = time;
    }

    static void Main(string[] args)
    {
        MyEvent evt = new MyEvent("event1", new DateTime(2007, 5, 5));

        DataContractSerializer serializer = new DataContractSerializer(typeof(MyEvent));
        XmlWriter writer = XmlWriter.Create(@"c:\event.xml");
        serializer.WriteObject(writer, evt);
        writer.Close();
    }
}