public static void UseLeftInnerJoin()
{
var employeeRepository = new EmployeeRepository();
var departmentRepository = new DepartmentRepository();
var query = from d in departmentRepository.GetAll()
join e in employeeRepository.GetAll()
on
d.ID equals e.ID
into ed
select new
{
Department = d.Name,
Employees = ed
};
foreach (var group in query)
{
Console.WriteLine(group.Department);
foreach (var employee in group.Employees)
{
Console.WriteLine("\t" + employee.Name);
}
}
}
//private static void UseGroup()
//{
// var repository = new EmployeeRepository();
// var queryByDepartment = from e in repository.GetAll()
// group e by e.DepartmentID
// into eGroup
//}
public static void UseInnerJoin()
{
var employeeRepository = new EmployeeRepository();
var departmentRepository = new DepartmentRepository();
var query = from e in employeeRepository.GetAll()
join d in departmentRepository.GetAll() on
e.DepartmentID equals d.ID
select new
{
Employee = e.Name,
Department = d.Name
};
foreach (var e in query)
{
Console.WriteLine("{0} {1}", e.Employee, e.Department);
}
}
