//Selecciona el Talonario
 public void fu_car_tal()
 {
     try
     {
         c_adm004  objTal = new c_adm004();
         DataTable dt_tal = objTal._01("CMP", "H");
         cb_num_tal.DataSource    = dt_tal;
         cb_num_tal.DisplayMember = "va_nom_tal";
         cb_num_tal.ValueMember   = "va_nro_tal";
     }
     catch (Exception ex)
     {
         throw ex;
     }
 }