private void UsartSendMessage(byte[] data, int offset, int count) { if (Serial != null) { Serial.write(data, offset, count); } else { MessageBox.Show("请确保串口已经成功打开,再发送数据!"); } }
private void btn_test_Click(object sender, EventArgs e) { if (Serial != null) { Serial.write("23456789"); } else { MessageBox.Show("Please open a SerialPort in the first!"); } }