C#序列化成XML注意细节

class Arwen
{
private Hashtable table = new Hashtable();
private TimeSpan time = new TimeSpan(0, 0, 1);
public Hashtable Table
{
get { return table; }
set { table = value; }
}
public TimeSpan Time
{
get { return time; }
set { time = value; }
}
public string Name { get; set;}
}

using System.Xml.Serialization;
using System.IO;
class Arwen
{
private Hashtable table = new Hashtable();
private TimeSpan time = new TimeSpan(0, 0, 1);
public Arwen()
{
}
[XmlIgnoreAttribute]
public Hashtable Table
{
get { return table; }
set { table = value; }
}
[XmlIgnoreAttribute]
public TimeSpan Time
{
get { return time; }
set { time = value; }
}
}
Arwen weiwen = new Arwen();
weiwen.Time = new TimeSpan(1,2,3); // 1 hours , 2 minutes, 3 seconds
weiwen.Table.Add("arwen", 250);
string filename = @"c:/temp/arwen.xml";
XmlSerializer xs = new XmlSerializer(typeof(Arwen));
using (FileStream file = new FileStream(filename, FileMode.Create))
xs.Serialize(file, sa);