C＃中的USB條碼讀取器

Question

我想從USB掃描儀讀取條形碼。

使用SerialPort連接時，我收到類似héà&"à')&'_h或qà&é"'(èq 。

有沒有辦法解碼此值？

        private void Form1_Load(Object sender, EventArgs e)
        {
            _serialPort = new SerialPort("COM1", 19200, Parity.None, 8, StopBits.One);
            _serialPort.Handshake = Handshake.None;
            _serialPort.DataReceived += new SerialDataReceivedEventHandler(sp_DataReceived);
            _serialPort.ReadTimeout = 500;
            _serialPort.WriteTimeout = 500;
            _serialPort.Open();
        }

/ *

* /

        private void btnStart_Click(Object sender, EventArgs e)
        {
            try
            {
                if (!_serialPort.IsOpen)
                    _serialPort.Open();

                _serialPort.Write("SI\r\n");
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error opening/writing to serial port :: " + ex.Message, "Error!");
            }
        }

        void sp_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            Thread.Sleep(500);
            String data = _serialPort.ReadLine();
            this.BeginInvoke(new SetTextDeleg(si_DataReceived), new Object[] { data });
        }

        private void si_DataReceived(String data)
        {
            textBox1.Text = data.Trim().ToString();
        }

謝謝

Answer 1

使用SerialPort-Class的成員。

_serialPort = new SerialPort("COM1", 19200, Parity.None, 8, StopBits.One);
_serialPort.Handshake = Handshake.None;
_serialPort.DataReceived += new SerialDataReceivedEventHandler(sp_DataReceived);
_serialPort.ReadTimeout = 500;
_serialPort.WriteTimeout = 500;
// Encoding
_serialPort.Encoding = Encoding.ASCII;

_serialPort.Open();

Answer 2

謝謝您的幫助，我終於找到了條碼掃描器給我這種奇怪代碼的方式。 實際上，當我打開鎖蓋時，一切都很好。 它也可以與記事本一起使用。