public void LoadEngineers()
        {
            //Load Engineers
            List <Engineer> engineers = sql.getEngineersAll();

            engineers.Sort();
            comboBox_EngineerEditRepair.ItemsSource       = engineers;
            comboBox_EngineerEditRepair.DisplayMemberPath = "NameEngineer";
            comboBox_EngineerEditRepair.SelectedIndex     = 0;
            engineers = null;
        }