private void FrmMain_Load(object sender, EventArgs e)
{
_zfmSensor = new Zfm20Fingerprint(DefaultComPort, DefaultBaudRate);
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
DefaultComPort = comboBox1.SelectedItem.ToString();
_zfmSensor = new Zfm20Fingerprint(DefaultComPort, DefaultBaudRate);
//MessageBox.Show(DefaultComPort);
}