private static void F1()
{
Marking s = new Marking();
FileStream fs = new FileStream("student.txt", FileMode.Create, FileAccess.Write);
XmlSerializer xs = new XmlSerializer(typeof(Marking));
xs.Serialize(fs, s);
fs.Close();
}
private static void F2()
{
FileStream fs = new FileStream("student.txt", FileMode.Open, FileAccess.Read);
XmlSerializer xs = new XmlSerializer(typeof(Marking));
Marking t = xs.Deserialize(fs) as Marking;
fs.Close();
}