private void AddCakeToImportDetail()
 {
     try
     {
         FrmInforTabImputCouponImport.isAdd           = true;
         FrmInforTabImputCouponImport.rowDetailCoupon = row;
         FrmInforTabImputCouponImport frm = new FrmInforTabImputCouponImport();
         frm.StartPosition = FormStartPosition.CenterScreen;
         Int32 rowBeforeAdd = CakeDAO.Instance.AmountRows();
         Int32 rowAfterAdd  = CakeDAO.Instance.AmountRows();
         if (rowBeforeAdd - rowAfterAdd == 0)
         {
             AddImportCoupon(true);
         }
         else
         {
             AddImportCoupon(false);
         }
         frm.ShowDialog();
         if (!FrmInforTabImputCouponImport.isCancel)
         {
             LoadDetailCoupon();
             LoadCakePresent();
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }
 }
 private void EditCouponDetail()
 {
     try
     {
         if (row < 0)
         {
             throw new Exception("Chọn sản phẩm ở chi tiết phiếu nhập");
         }
         FrmInforTabImputCouponImport.idCouponDetail  = Int32.Parse(dgvDetailImport.Rows[row].Cells[0].Value.ToString());
         FrmInforTabImputCouponImport.idCake          = Int32.Parse(dgvCakePresent.Rows[rowDgvCakePresent].Cells[0].Value.ToString());
         FrmInforTabImputCouponImport.isAdd           = false;
         FrmInforTabImputCouponImport.rowDetailCoupon = row;
         FrmInforTabImputCouponImport frm = new FrmInforTabImputCouponImport();
         frm.StartPosition = FormStartPosition.CenterScreen;
         frm.ShowDialog();
         LoadCakePresent();
         LoadDetailCoupon();
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }
 }