static void Main(string[] args)
{
File.Delete("Department.xml");
File.Delete("Employee.xml");
IRepository repo = new XmlRepository();
Populate(repo);
var employees = repo.Employees;
PrintEmployees(employees);
var emplArtur = repo.Employees.First(
e => e.FirstName.Equals("Artur", StringComparison.InvariantCultureIgnoreCase)
);
emplArtur.Promote();
repo.Save();
PrintEmployees(repo.Employees);
var engeneeringDepartment = new Department {
Id = 4, Name = "Engineering"
};
repo.AddDepartment(engeneeringDepartment);
repo.Save();
PrintDepartments(repo.Departments);
emplArtur.ChangeDepartment(engeneeringDepartment);
repo.Save();
PrintEmployees(repo.Employees);
emplArtur.Demote();
repo.Save();
PrintEmployees(repo.Employees);
var marcoCantu = employees.Single(e => e.FirstName.Equals("Marco") && e.SecondName.Equals("Cantu"));
emplArtur.ChangeChief(marcoCantu);
repo.Save();
PrintEmployees(repo.Employees);
Console.Read();
}