public void Update(DalTest entity)
{
Test ormTest = entity.ToOrm();
Test original = context.Set<Test>().Include(m => m.Questions).Single(m => m.Id == entity.Id);
context.Entry(original).CurrentValues.SetValues(entity);
foreach (Question dalQuestion in original.Questions.ToList())
{
if (ormTest.Questions.All(s => s.Id != dalQuestion.Id))
original.Questions.Remove(dalQuestion);
}
foreach (Question dalQuestion in ormTest.Questions.ToList())
{
var question = original.Questions.FirstOrDefault(s => s.Id == dalQuestion.Id);
if (question == null)
{
var newQuestion = context.Set<Question>().FirstOrDefault(m => m.Id == dalQuestion.Id);
original.Questions.Add(newQuestion);
}
}
context.SaveChanges();
}
