public DataTree LoadFromFile(string filename)
{
XmlDocument file = new XmlDocument();
file.Load(filename);
DataTree dt = new DataTree();
foreach (XmlNode group in file.DocumentElement)
{
dt.AddGroup(new GroupInfo(group.Attributes[0].Value));
XmlNode students = group.FirstChild;
foreach (XmlNode student in students.ChildNodes)
{
try
{
dt[dt.Count - 1].addStudent(student["surname"].InnerText,
student["name"].InnerText,
student["middleName"].InnerText,
int.Parse(student["rating"].InnerText),
"default.bmp");
}
catch
{
//out of range rating message
}
}
}
return(dt);
}
