public SostavShablon()
        {
            cbLavozim = new ComboBox();
            List <Lavozim> Llist = ReadXml.SelectLavozim(null, null);

            cbLavozim.DisplayMemberPath = "Nom";
            cbLavozim.ItemsSource       = Llist.OrderBy(x => x.tarif_raziryad).Select(x => x).ToList <Lavozim>();
            Koef = 1.ToString();
            Son  = 1.ToString();
            OV   = "168";
            Id   = "0";
        }