public clsPortManager()
{
clsFileHandling fh = new clsFileHandling();
string port = "COM6";
port = fh.FileRead(fh.GetDirectory(), 0);
sp = new SerialPort(port, 9600);
}
private void btnOK_Click(object sender, EventArgs e)
{
clsFileHandling fh = new clsFileHandling();
string port = lbxCOMPortList.SelectedItem.ToString();
fh.FileWrite(fh.GetDirectory(), port);
MessageBox.Show("The system needs to exit to apply the changes. Click OK to continue?", "Exit", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
Application.Exit();
}