static void MainExplicitEagerLoading()
{
using (ContosoUniversityMigrationsEntities ctx = new ContosoUniversityMigrationsEntities())
{
ctx.Database.Log = s => Console.WriteLine(s);
foreach (Department d in ctx.Departments.Include(d => d.Courses).Include(d => d.Person))
{
//ctx.Entry(d).Reference(dpto => dpto.Person).Load();
//ctx.Entry(d).Collection(dpto => dpto.Courses).Load();
Console.WriteLine(d.Name);
Console.WriteLine(d.Person.FirstName);
foreach (Course c in d.Courses)
{
Console.WriteLine($"\t{c.Title}");
}
}
}
}
static void Main()
{
var departamento = new Department()
{
DepartmentID = 5,
Name = "Nuevo",
StartDate = DateTime.Now
};
using (ContosoUniversityMigrationsEntities context = new ContosoUniversityMigrationsEntities())
{
context.Database.Log = s => Console.WriteLine(s);
context.Entry(departamento).State = EntityState.Modified;
foreach (var entity in context.ChangeTracker.Entries())
{
Console.WriteLine("{0}: {1}", entity.Entity.GetType().Name, entity.State);
}
context.SaveChanges();
}
}