private void BtnSearchEmployee_Click(object sender, EventArgs e)
        {
            Cursor.Current = Cursors.WaitCursor;
            serviceDA      = new DBControllerWSClient();
            venta          = (serviceDA.querySaleBySerialCode(txtSerialCode.Text));
            Cursor.Current = Cursors.Arrow;
            if (venta.serialCode != null)
            {
                RefundForm modClient = new RefundForm();
                modClient.CurrentSale = new sale();
                serviceDA             = new DBControllerWSClient();
                modClient.CurrentSale = venta;
                modClient.SetParent(this);
                modClient.ShowDialog();
                updateDataGridView();
            }
            else
            {
                MessageBox.Show("Cliente no encontrado");
            }



            /*
             *
             * if (!filledValues())
             * {
             *  //MessageBox.Show("Complete la información");
             * }
             * else
             * {
             *  Cursor.Current = Cursors.WaitCursor;
             *  serviceDA = new DBControllerWSClient();
             *  sale sale = (serviceDA.querySaleBySerialCode(txtSerialCode.Text));
             *  Cursor.Current = Cursors.Arrow;
             *  if (sale.totalSale != null)
             *  {
             *      RefundForm refForm = new RefundForm();
             *      refForm.CurrentSale = new sale();
             *      serviceDA = new DBControllerWSClient();
             *      refForm.CurrentSale = sale;
             *      refForm.SetParent(this);
             *      refForm.ShowDialog();
             *      updateDataGridView();
             *  }
             *  else
             *  {
             *      MessageBox.Show("Cliente no encontrado");
             *  }
             *
             * }*/
        }