private void btn_InsertShipper_Click(object sender, EventArgs e)
        {
            var newShipperForm = new NewShipperForm {
                RefToFormMain = this
            };

            newShipperForm.Show();
        }
 private void btn_EditShipper_Click(object sender, EventArgs e)
 {
     try
     {
         var row            = shippersGridControl.SelectedRows;
         var cells          = row[0].Cells;
         var newShipperForm = new NewShipperForm(int.Parse(cells[0].Value.ToString()))
         {
             RefToFormMain = this
         };
         newShipperForm.Show();
     }
     catch (Exception ex)
     {
         MessageBox.Show("Vui lòng chọn một dòng.", "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Information);
     }
 }