private void previousBtn_Click(object sender, EventArgs e)
        {
            this.Close();
            MoreInfoOfPacketCAT21 newForm = new MoreInfoOfPacketCAT21(this.selectedPacket);

            newForm.Show();
        }
        private void moreInfoOfPacket_Click(object sender, EventArgs e)
        {
            int packet = packetGridView.CurrentCell.RowIndex;

            if (dataBlockList[packet].GetCAT10() != null)
            {
                MoreInfoOfPacketCAT10 newForm = new MoreInfoOfPacketCAT10(dataBlockList[packet].GetCAT10());
                newForm.Show();
            }
            if (dataBlockList[packet].GetCAT21() != null)
            {
                MoreInfoOfPacketCAT21 newForm = new MoreInfoOfPacketCAT21(dataBlockList[packet].GetCAT21());
                newForm.Show();
            }
        }