linq xml

<?xml version="1.0" encoding="utf-8" ?>
<Patients>
  <Patient EMail="[email protected]">
    <FirstName>LeBron</FirstName>
    <LastName>James</LastName>
  </Patient>
  <Patient EMail="[email protected]">
    <FirstName>Kobe</FirstName>
    <LastName>Bryant</LastName>
  </Patient>
  <Patient EMail="[email protected]">
    <FirstName>Allen</FirstName>
    <LastName>Iverson</LastName>
  </Patient>
</Patients>
 
 
class PatietList : List<Patient>
{
    public void Load(string xmlFile)
    {
        XDocument doc = XDocument.Load(xmlFile);     
 
        var query = from xElem in doc.Descendants("Patient")
                    select new Patient
                    {
                        EMail = xElem.Attribute("EMail").Value,
                        FirstName = xElem.Element("FirstName").Value,
                        LastName = xElem.Element("LastName").Value,
                    };     
 
        this.Clear();
        AddRange(query);
    }     
 
    public void Save(string xmlFile)
    {
        XElement xml = new XElement("Patients",
                        from p in this
                        select new XElement("Patient",
                            new XAttribute("EMail", p.EMail),
                            new XElement("FirstName", p.FirstName),
                            new XElement("LastName", p.LastName)));     
 
        xml.Save(xmlFile);     
 
    }     
 
}