private void detach_Saches(Sach entity)
{
this.SendPropertyChanging();
entity.LOAISACH = null;
}
private void attach_Saches(Sach entity)
{
this.SendPropertyChanging();
entity.LOAISACH = this;
}
partial void UpdateSach(Sach instance);
partial void DeleteSach(Sach instance);
partial void InsertSach(Sach instance);