private void newSupp_Click(object sender, EventArgs e)
        {
            var newSupplierForm = new NewSupplierForm {
                RefToFormMain = this
            };

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