//WEITERMACHEN Verbindungen!!!
public void insertStudenLectureAssociations()
{
//erst die Studenten Holen
Student carla = dataContext.Student.First(st => st.Name.Equals("Carla"));
Student pedro = dataContext.Student.First(st => st.Name.Equals("Pedro"));
Student xing = dataContext.Student.First(st => st.Name.Equals("Xing Mi Huang"));
Student joseluisete = dataContext.Student.First(st => st.Name.Equals("Jose Luisete"));
Student james = dataContext.Student.First(st => st.Name.Equals("James")); //gebraucht um die ganzen verbindungen zu haben!!
//dann die Fächer
Lecture mathe = dataContext.Lecture.First(Lecture => Lecture.Name.Equals("Mathematik"));
Lecture geschichte = dataContext.Lecture.First(Lecture => Lecture.Name.Equals("Geschichte"));
Lecture fisik = dataContext.Lecture.First(Lecture => Lecture.Name.Equals("Fisik"));
//wir schreiben die studenten-Leture Verbindungen!!
//LEHRER SCHNELLERE VERSION, anstatt die 3 Linie alles zusammen:
dataContext.StudentLecture.InsertOnSubmit(new StudentLecture {
Student = carla, Lecture = mathe
});
dataContext.StudentLecture.InsertOnSubmit(new StudentLecture {
Student = pedro, Lecture = mathe
});
// Längere Version auch von Lehrer
StudentLecture slXing = new StudentLecture();
slXing.StudentId = xing.Id;
slXing.LectureId = geschichte.Id;
dataContext.StudentLecture.InsertOnSubmit(slXing);
dataContext.StudentLecture.InsertOnSubmit(new StudentLecture {
Student = joseluisete, Lecture = fisik
});
dataContext.StudentLecture.InsertOnSubmit(new StudentLecture {
Student = joseluisete, Lecture = geschichte
});
dataContext.StudentLecture.InsertOnSubmit(new StudentLecture {
Student = joseluisete, Lecture = mathe
});
dataContext.SubmitChanges(); //update the changes to the DB
MainDataGrid.ItemsSource = dataContext.StudentLecture;
// Student und Lecture werden auch fälschlich angezeigt da wir das ganze Objekt übergeben... das ist nicht so ganz ok
}
private void detach_StudentLecture(StudentLecture entity)
{
this.SendPropertyChanging();
entity.Lecture = null;
}
private void attach_StudentLecture(StudentLecture entity)
{
this.SendPropertyChanging();
entity.Lecture = this;
}
partial void DeleteStudentLecture(StudentLecture instance);
partial void UpdateStudentLecture(StudentLecture instance);
partial void InsertStudentLecture(StudentLecture instance);