public bool AddData(ChitietHoaDonObj cthdObj)
 {
     cmd.CommandText = "insert into ChiTietPhieuBan(MaHD,MaSach,SoLuong) values('" + cthdObj.Mahd + "','" + cthdObj.Masach + "','" + cthdObj.Soluong + "')";
     cmd.CommandType = CommandType.Text;
     cmd.Connection  = con.Connection;
     try
     {
         con.OpenConn();
         cmd.ExecuteNonQuery();
         return(true);
     }
     catch (Exception ex)
     {
         string mex = ex.Message;
         cmd.Dispose();
         con.CloseConn();
     }
     return(false);
 }
        private void btnLuu_Click(object sender, EventArgs e)
        {
            bool             a       = false;
            ChitietHoaDonObj cthdObj = new ChitietHoaDonObj();

            for (int k = 0; k < dtGRchitietHD.Rows.Count; k++)
            {
                cthdObj.Mahd    = txtMaHD.Text;
                cthdObj.Masach  = dtGRchitietHD.Rows[k].Cells[0].Value.ToString();
                cthdObj.Soluong = int.Parse(dtGRchitietHD.Rows[k].Cells[2].Value.ToString());
                a = cthdCtr.AddData(cthdObj);
            }
            if (a == true)
            {
                MessageBox.Show("Thêm thành công!", "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            else
            {
                MessageBox.Show("Thêm không thành công!", "Lỗi", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
 public bool AddData(ChitietHoaDonObj cthdObj)
 {
     return(cthdMod.AddData(cthdObj));
 }