[转][SerialPort]测试用例

private void Form1_Load(object sender, EventArgs e)

{

    var s = SerialPort.GetPortNames().OrderBy(r => r);

    foreach (var item in s)

    {

        comCOM.Items.Add(item);

    }

    if (comCOM.Items.Count > )

        comCOM.SelectedIndex = ;

    var rates = new object[] { , , , , , ,  };

    comBaudRate.Items.AddRange(rates);

    comBaudRate.SelectedIndex = ;

    txtDataBits.Text = "";

    var paritys = Enum.GetNames(typeof(Parity));

    comParity.Items.AddRange(paritys);

    comParity.SelectedIndex = ;

    var stops = Enum.GetNames(typeof(StopBits));

    comStopBits.Items.AddRange(stops);

    comStopBits.SelectedIndex = ;

}

private void btnOpen_Click(object sender, EventArgs e)

{

    ClostCom();

    toolInfo.Text = string.Empty;

    try

    {

        serialPort1.PortName = comCOM.Text;

        serialPort1.BaudRate = Math.Max(, ConvertHelper.ToInt(comBaudRate.Text));

        serialPort1.DataBits = Math.Max(, ConvertHelper.ToInt(txtDataBits.Text));

        serialPort1.Parity = (Parity)Enum.Parse(typeof(Parity), comParity.Text);

        serialPort1.StopBits = (StopBits)Enum.Parse(typeof(StopBits), comStopBits.Text);

        serialPort1.Open();

        toolComState.BackColor = Color.Green;

        txtInfo.Text = DateTime.Now.ToString("HH:mm") + " 打开串口成功！\r\n";

    }

    catch (Exception ex)

    {

        toolInfo.Text = "打开串口失败！";

        txtInfo.Text = DateTime.Now.ToString("HH:mm") + " 打开串口失败：" + ex.Message + "\r\n";

    }

}

private void ClostCom()

{

    try

    {

        serialPort1.Close();

        toolComState.BackColor = SystemColors.Control;

    }

    catch { }

}

private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)

{

    Thread.Sleep();

    byte[] buffer = new byte[serialPort1.ReadBufferSize];

    int len = serialPort1.Read(buffer, , buffer.Length);

    Invoke((MethodInvoker)delegate

    {

        toolInfo.Text = string.Empty;

        if (txtInfo.Lines.Length > )

            txtInfo.Text = string.Format("{0} {1} 接收到：{2}", DateTime.Now.ToString("HH:mm"), serialPort1.PortName, GetByte(buffer, len));

        else

        {

            var s = txtInfo.Text;

            txtInfo.Text = string.Format("{0} {1} 接收到：{2}\r\n{3}", DateTime.Now.ToString("HH:mm"), serialPort1.PortName, GetByte(buffer, len), s);

        }

    });

}

private string GetByte(byte[] buffer, int len)

{

    StringBuilder sb = new StringBuilder();

    for (int i = ; i < len; i++)

    {

        var item = buffer[i];

        sb.Append(item.ToString("x2") + " ");

    }

    sb.AppendLine();

    sb.Append(Encoding.Default.GetString(buffer));

    sb.AppendLine();

    return sb.ToString();

}

有个 BUG：文本框始终只有一行内容。

虚拟串口工具下载：下载地址