static void Cleanup()
{
using (var context = new EFRecipesEntities())
{
context.ExecuteStoreCommand("delete from chapter3.registration");
}
}
static void RunExample()
{
using (var context = new EFRecipesEntities())
{
context.Registrations.AddObject(new Registration {
StudentName = "Jill Rogers", RegistrationDate = DateTime.Parse("12/03/2009 9:30 pm")
});
context.Registrations.AddObject(new Registration {
StudentName = "Steven Combs", RegistrationDate = DateTime.Parse("12/03/2009 10:45 am")
});
context.Registrations.AddObject(new Registration {
StudentName = "Robin Rosen", RegistrationDate = DateTime.Parse("12/04/2009 11:18 am")
});
context.Registrations.AddObject(new Registration {
StudentName = "Allen Smith", RegistrationDate = DateTime.Parse("12/04/2009 3:31 pm")
});
context.SaveChanges();
}
using (var context = new EFRecipesEntities())
{
var groups = from r in context.Registrations
group r by EntityFunctions.TruncateTime(r.RegistrationDate) into g
select g;
foreach (var element in groups)
{
Console.WriteLine("Registrations for {0}", ((DateTime)element.Key).ToShortDateString());
foreach (var registration in element)
{
Console.WriteLine("\t{0}", registration.StudentName);
}
}
}
Console.WriteLine("Press <enter> to continue...");
Console.ReadLine();
}
