private void UpdateTeachers(Chair updatingChair, Chair chair)
{
List <Teacher> oldTeachers = updatingChair.Teachers.ToList();
if (chair.Teachers == null)
{
return;
}
List <Teacher> teachers = new List <Teacher>();
chair.Teachers.ForEach((Teacher t) => teachers.Add(db.Teachers.Find(t.Id)));
updatingChair.Teachers.Clear();
foreach (Teacher teacher in teachers)
{
updatingChair.Teachers.Add(teacher);
}
oldTeachers = oldTeachers.Except(updatingChair.Teachers).ToList();
oldTeachers.ForEach((Teacher t) => db.Entry(t).State = EntityState.Deleted);
}
private void UpdateChairs(Faculty updatingFaculty, Faculty faculty)
{
List <Chair> oldChairs = updatingFaculty.Chairs.ToList();
if (faculty.Chairs == null)
{
return;
}
List <Chair> chairs = new List <Chair>();
faculty.Chairs.ForEach((Chair c) => chairs.Add(db.Chairs.Find(c.Id)));
updatingFaculty.Chairs.Clear();
foreach (Chair chair in chairs)
{
updatingFaculty.Chairs.Add(chair);
}
oldChairs = oldChairs.Except(updatingFaculty.Chairs).ToList();
oldChairs.ForEach((Chair c) => db.Entry(c).State = EntityState.Deleted);
}